Datalog review please

subforum for requesting current tune review services
Not happy with your current tune? Or if you just want
a 2nd opinion, this is the place for it

Re: Datalog review please

Unread postby Fasterthangas » Tue Sep 15, 2015 3:49 pm

red5.0fogger wrote:Have you worked on the dashpot settings at all? Sounds like its in dashpot. You're getting a cruise control effect right? It goes 25 mph with no throttle yes?
Try working on the dashpot area of the tune. (That is if you're confident of no vac leaks.)


Exactly. I have not worked on the dashpot settings yet.
Fasterthangas
Power Poster
 
Posts: 676
Joined: Sun Aug 02, 2015 1:28 pm
Location: AZ
Name: Eric
Vehicle Information: '95 Mustang GT
347 SBF
10.0:1 cr
Systemax ll
230/238 @ .050 custom cam
AFR Renegade 185 heads
Ford Racing EV14 34lb. injectors
90mm Lightning MAF
4" CAI
Accufab 75mm TB
T5
3.73's
1-3/4" shorty headers into 2.5" duals out the back with H pipe. Jones Maxflow straight through mufflers

Re: Datalog review please

Unread postby Fasterthangas » Tue Sep 15, 2015 4:08 pm

I just spoke with my buddy who installed the engine. He reminded me that the previous engine did the same thing. High idle at cruise.
I have a different TPS now but the TB and IAC remain the same. The previous engine had a base tune on a Moates chip which is now removed.
Fasterthangas
Power Poster
 
Posts: 676
Joined: Sun Aug 02, 2015 1:28 pm
Location: AZ
Name: Eric
Vehicle Information: '95 Mustang GT
347 SBF
10.0:1 cr
Systemax ll
230/238 @ .050 custom cam
AFR Renegade 185 heads
Ford Racing EV14 34lb. injectors
90mm Lightning MAF
4" CAI
Accufab 75mm TB
T5
3.73's
1-3/4" shorty headers into 2.5" duals out the back with H pipe. Jones Maxflow straight through mufflers

Re: Datalog review please

Unread postby Fasterthangas » Tue Sep 15, 2015 4:09 pm

decipha wrote:it sounds like you have a bad vac leak

there is only one correct position for the set screw, its either correct or not, once you do a base idle reset you would make all other adjustments in the iac multiplier table

do a base idle reset and if she needs more air at fire up go kick up the cells in the iac multiplier table


I'm taking her to the garage tomorrow to run another smoke test to rule out vacuum leaks.
Fasterthangas
Power Poster
 
Posts: 676
Joined: Sun Aug 02, 2015 1:28 pm
Location: AZ
Name: Eric
Vehicle Information: '95 Mustang GT
347 SBF
10.0:1 cr
Systemax ll
230/238 @ .050 custom cam
AFR Renegade 185 heads
Ford Racing EV14 34lb. injectors
90mm Lightning MAF
4" CAI
Accufab 75mm TB
T5
3.73's
1-3/4" shorty headers into 2.5" duals out the back with H pipe. Jones Maxflow straight through mufflers

Re: Datalog review please

Unread postby decipha » Tue Sep 15, 2015 4:48 pm

good idea, could be a bad iac valve as well or could even be mounted backwards
User avatar
decipha
Tooner
 
Posts: 15325
Joined: Mon Jul 15, 2013 5:29 pm
Location: New Orleans, LA
Name: Michael Ponthieux
Vehicle Information: Supercoupin' x10
90 (4x 5spds) - Dante, Ruby, Daja, Ava
91 4r70w - Skarlett
92 (2x) 5spd & auto - Bianqa, Andrea
93 auto - Danika
94 5spd Rionda
95 auto Aisha
Vehicle 2 Information: Others:
00 Lincoln LS - Luanda
98 Camaro SS - Bounquisha
02 Harley F-150 - Sasasha
03 Marauder - DyShyKy
00 Explorer 5L - Bernyce

Re: Datalog review please

Unread postby red5.0fogger » Tue Sep 15, 2015 5:03 pm

I've heard of diff ways to smoke it. Some people just block the tail pipes and air filter housing. I think this would be easiest and best way to pressurize the whole motor. Small leaks would need 1 or 2 psi to show up.

How are guys doing it?
red5.0fogger
Premium Member
 
Posts: 476
Joined: Mon Oct 06, 2014 5:02 pm
Name: George
Vehicle Information: 86 GT, stock block, twisted wedge heads, Anderson N41 cam, cobra intake, 180 shot, 3.73 gears, T-5 trans, 24# injectors, 155Lph fuel pump, 73mm C&L mass air meter, moates QH tuned by Decipha, Mac 1 5/8 shorty headers, Flowmaster 2 chambers, Drag radials, South Side control arms circa 1999.

Re: Datalog review please

Unread postby Fasterthangas » Tue Sep 15, 2015 5:05 pm

decipha wrote:good idea, could be a bad iac valve as well or could even be mounted backwards


Backwards? I run a Fox IAC with the plug on the bottom. Is this correct?
Fasterthangas
Power Poster
 
Posts: 676
Joined: Sun Aug 02, 2015 1:28 pm
Location: AZ
Name: Eric
Vehicle Information: '95 Mustang GT
347 SBF
10.0:1 cr
Systemax ll
230/238 @ .050 custom cam
AFR Renegade 185 heads
Ford Racing EV14 34lb. injectors
90mm Lightning MAF
4" CAI
Accufab 75mm TB
T5
3.73's
1-3/4" shorty headers into 2.5" duals out the back with H pipe. Jones Maxflow straight through mufflers

Re: Datalog review please

Unread postby Fasterthangas » Tue Sep 15, 2015 5:14 pm

red5.0fogger wrote:I've heard of diff ways to smoke it. Some people just block the tail pipes and air filter housing. I think this would be easiest and best way to pressurize the whole motor. Small leaks would need 1 or 2 psi to show up.

How are guys doing it?


Block off TB and inject smoke into the brake booster hose. Basically; pressurizing the top end with smoke. Watch for leaks.
Fasterthangas
Power Poster
 
Posts: 676
Joined: Sun Aug 02, 2015 1:28 pm
Location: AZ
Name: Eric
Vehicle Information: '95 Mustang GT
347 SBF
10.0:1 cr
Systemax ll
230/238 @ .050 custom cam
AFR Renegade 185 heads
Ford Racing EV14 34lb. injectors
90mm Lightning MAF
4" CAI
Accufab 75mm TB
T5
3.73's
1-3/4" shorty headers into 2.5" duals out the back with H pipe. Jones Maxflow straight through mufflers

Re: Datalog review please

Unread postby red5.0fogger » Tue Sep 15, 2015 5:36 pm

Doesn't it go out the tail pipe?
red5.0fogger
Premium Member
 
Posts: 476
Joined: Mon Oct 06, 2014 5:02 pm
Name: George
Vehicle Information: 86 GT, stock block, twisted wedge heads, Anderson N41 cam, cobra intake, 180 shot, 3.73 gears, T-5 trans, 24# injectors, 155Lph fuel pump, 73mm C&L mass air meter, moates QH tuned by Decipha, Mac 1 5/8 shorty headers, Flowmaster 2 chambers, Drag radials, South Side control arms circa 1999.

Re: Datalog review please

Unread postby Fasterthangas » Tue Sep 15, 2015 5:44 pm

red5.0fogger wrote:Doesn't it go out the tail pipe?


It can but we aren't talking a lot of pressure here. It eventually makes it's way out of any leaks. Some guys blow smoke up their tailpipe. True story and pun intended.
Fasterthangas
Power Poster
 
Posts: 676
Joined: Sun Aug 02, 2015 1:28 pm
Location: AZ
Name: Eric
Vehicle Information: '95 Mustang GT
347 SBF
10.0:1 cr
Systemax ll
230/238 @ .050 custom cam
AFR Renegade 185 heads
Ford Racing EV14 34lb. injectors
90mm Lightning MAF
4" CAI
Accufab 75mm TB
T5
3.73's
1-3/4" shorty headers into 2.5" duals out the back with H pipe. Jones Maxflow straight through mufflers

Re: Datalog review please

Unread postby StangD » Tue Sep 15, 2015 5:54 pm

Fasterthangas wrote:
decipha wrote:good idea, could be a bad iac valve as well or could even be mounted backwards


Backwards? I run a Fox IAC with the plug on the bottom. Is this correct?



Yes that IAC mounting position is correct. During smoke test do you remove the oil filler cap and/or pcv to check for leaks into the crankcase (i.e. intake leak on the bottomside of gasket)?
94 Mustang GT-T5-347(Fordstrokers DIY)-TF190s,FTI Cam,Ported Victor EFI,42s-LMAF,85MM TB-Nitrous-Suspension mods and DRs.
CBAZA-TM40

12.1 @119.50 NA

Pulling baby wheelies and breakin stuff.
StangD
Supporting Member 25
 
Posts: 490
Joined: Thu Aug 20, 2015 7:14 am
Name: Dewayne
Vehicle Information: 94 Mustang GT T5 CBAZA TM40

347 TF190-Victor EFI-LMAF- 85MM TB- 42s,4.10s-DRs

Re: Datalog review please

Unread postby Fasterthangas » Tue Sep 15, 2015 6:36 pm

StangD wrote:
Fasterthangas wrote:
decipha wrote:good idea, could be a bad iac valve as well or could even be mounted backwards


Backwards? I run a Fox IAC with the plug on the bottom. Is this correct?



Yes that IAC mounting position is correct. During smoke test do you remove the oil filler cap and/or pcv to check for leaks into the crankcase (i.e. intake leak on the bottomside of gasket)?


I think he usually pulls the pcv.
Fasterthangas
Power Poster
 
Posts: 676
Joined: Sun Aug 02, 2015 1:28 pm
Location: AZ
Name: Eric
Vehicle Information: '95 Mustang GT
347 SBF
10.0:1 cr
Systemax ll
230/238 @ .050 custom cam
AFR Renegade 185 heads
Ford Racing EV14 34lb. injectors
90mm Lightning MAF
4" CAI
Accufab 75mm TB
T5
3.73's
1-3/4" shorty headers into 2.5" duals out the back with H pipe. Jones Maxflow straight through mufflers

Re: Datalog review please

Unread postby StangD » Tue Sep 15, 2015 6:55 pm

FWIW I did a base idle rest since we have very similar cams and combos aren't too far off. It may or may not be useful to you going forward. I am pretty much on a stock Ford tune as it pertains to idle. Your mechanical idle could well change things but I don't really know.

Started at 1.000 TPS volts. Throttleblade almost completely closed.
Pulled the spout and IAC, IAC disconnect definitely dropped the idle.
Adjusted stop screw down about 70 rpms to 530rpms. Cam didn't like it much but it barely stayed running.
RPM definitely jumped when connecting both spout and IAC back up.
Currently running about 14.0 AFR on low idle.
My idle is about 50rpm above what I have entered in the tune so I have some idle tweaking to do when I get around to it.
Restarted hot just fine.
Hope that helps. With my fully ported big intake you should be able to do as well or better when you are right.
94 Mustang GT-T5-347(Fordstrokers DIY)-TF190s,FTI Cam,Ported Victor EFI,42s-LMAF,85MM TB-Nitrous-Suspension mods and DRs.
CBAZA-TM40

12.1 @119.50 NA

Pulling baby wheelies and breakin stuff.
StangD
Supporting Member 25
 
Posts: 490
Joined: Thu Aug 20, 2015 7:14 am
Name: Dewayne
Vehicle Information: 94 Mustang GT T5 CBAZA TM40

347 TF190-Victor EFI-LMAF- 85MM TB- 42s,4.10s-DRs

Re: Datalog review please

Unread postby Fasterthangas » Tue Sep 15, 2015 9:26 pm

I replaced my IAC and the car runs somewhat better. My TPS now sits at 1.09v at idle versus the 1.15v or more from before.
The car still idles high in gear during cruise, but not as high. Now it's more like 1100rpm, Here's the kicker... If I tap on the gas; the idle drops down to 750-800rpm.
I can reproduce this every time. The car is not happy idling at 750rpm in gear. It will sometimes just stall. I then can only start the engine if I feather the throttle and two foot it into gear while keeping the revs up. The car takes off and the cruise idle jumps back up.
Fasterthangas
Power Poster
 
Posts: 676
Joined: Sun Aug 02, 2015 1:28 pm
Location: AZ
Name: Eric
Vehicle Information: '95 Mustang GT
347 SBF
10.0:1 cr
Systemax ll
230/238 @ .050 custom cam
AFR Renegade 185 heads
Ford Racing EV14 34lb. injectors
90mm Lightning MAF
4" CAI
Accufab 75mm TB
T5
3.73's
1-3/4" shorty headers into 2.5" duals out the back with H pipe. Jones Maxflow straight through mufflers

Re: Datalog review please

Unread postby StangD » Wed Sep 16, 2015 4:01 am

Fasterthangas wrote:I replaced my IAC and the car runs somewhat better. My TPS now sits at 1.09v at idle versus the 1.15v or more from before.
The car still idles high in gear during cruise, but not as high. Now it's more like 1100rpm, Here's the kicker... If I tap on the gas; the idle drops down to 750-800rpm.
I can reproduce this every time. The car is not happy idling at 750rpm in gear. It will sometimes just stall. I then can only start the engine if I feather the throttle and two foot it into gear while keeping the revs up. The car takes off and the cruise idle jumps back up.


Sounds like small progress. And I wonder if Red50foggers dashpot suggestion might be something to tweak soon. Regarding being able to knock idle down with a pedal tap might be a clue. I'd verify again it isn't something mechanical. Your TPS voltage is down to something more normal now so probably not, With an assistant in the car, car in drive and foot on brake, I would put my hand on linkage and make sure throttle body linkage or cable allows TB to completely and easily shut. Doesn't sound like that's the problem, but throttle bodies are notorious for being sticky near the closed position.

I think 750 is going to be your idle target for now with that cam. I'll be amazed if it doesn't always lope some and hopefully you'll be able to deal with that with your auto. Getting the idle air/fuel right will probably be very important to you once you re-verify no vacuum leaks. I am going to look at Decipha's idle writeup and see what might be possible on my car as far as taming the cam lope some. If you are still running mechanical idle and I am not, then anything I do won't be useful info to you.
94 Mustang GT-T5-347(Fordstrokers DIY)-TF190s,FTI Cam,Ported Victor EFI,42s-LMAF,85MM TB-Nitrous-Suspension mods and DRs.
CBAZA-TM40

12.1 @119.50 NA

Pulling baby wheelies and breakin stuff.
StangD
Supporting Member 25
 
Posts: 490
Joined: Thu Aug 20, 2015 7:14 am
Name: Dewayne
Vehicle Information: 94 Mustang GT T5 CBAZA TM40

347 TF190-Victor EFI-LMAF- 85MM TB- 42s,4.10s-DRs

Re: Datalog review please

Unread postby quartermaster » Wed Sep 16, 2015 5:31 am

Hi guys Don't forget that idle spark also plays a big part in this. It won't cause a high idle on its own but it can contribute to rough idle and stalling. The tapping the gas and then normal idle is strange. Definitely verify that the throttle cable is relaxed at closed position and not possibly holding the throttle at times. You should be able to verify that with datalogs. After you tap the throttle the TPS voltage should be the same as normal closed throttle. The closed throttle TPS should always be the same. As far as the not starting when hot its just a matter of doing what D said. Increase the IAC multiplier to allow more air for start up but after start the idle should settle. Don't forget that the brake booster itself can be a vac leak. To test, just remove the check valve out of the booster after the engine has been off for a few min. There should be a good inrush of air it its good. Gotta go. Andrew
quartermaster
Power Poster
 
Posts: 101
Joined: Thu Aug 13, 2015 8:15 pm
Name: Andrew
Vehicle Information: 89 LX 331 9:1 T5 trans until it grenades Afr 185 heads, Performer Rpm, Comp Cams xe274hr, Deka 60s,Sct Ba 2800 long tubes, X pipe, Vortech si, 11Lbs so far, 19Lbhr meth injection
A9L Tweecer Rt, Cal Edit 11.3 @127 last year before tuning. new times 10.93 @ 131.5

Re: Datalog review please

Unread postby StangD » Wed Sep 16, 2015 8:57 am

Valve cover ventilation leaks is another source of unmetered air the PCM doesn't need to deal with. Most of the aftermarket valve cover grommets are terrible quality. Don't ever buy a oil fill cap/breather with a built in PCV valve either. I bought one from Ford Racing that wasn't even close to being sealed. By themselves small things like this won't cause your current problem, but they can add up to a car that's tougher to tune.
94 Mustang GT-T5-347(Fordstrokers DIY)-TF190s,FTI Cam,Ported Victor EFI,42s-LMAF,85MM TB-Nitrous-Suspension mods and DRs.
CBAZA-TM40

12.1 @119.50 NA

Pulling baby wheelies and breakin stuff.
StangD
Supporting Member 25
 
Posts: 490
Joined: Thu Aug 20, 2015 7:14 am
Name: Dewayne
Vehicle Information: 94 Mustang GT T5 CBAZA TM40

347 TF190-Victor EFI-LMAF- 85MM TB- 42s,4.10s-DRs

Re: Datalog review please

Unread postby red5.0fogger » Wed Sep 16, 2015 9:03 am

Eric,

did you start off with the u4p2 base tune on the homepage? I forgot if you did or not.
red5.0fogger
Premium Member
 
Posts: 476
Joined: Mon Oct 06, 2014 5:02 pm
Name: George
Vehicle Information: 86 GT, stock block, twisted wedge heads, Anderson N41 cam, cobra intake, 180 shot, 3.73 gears, T-5 trans, 24# injectors, 155Lph fuel pump, 73mm C&L mass air meter, moates QH tuned by Decipha, Mac 1 5/8 shorty headers, Flowmaster 2 chambers, Drag radials, South Side control arms circa 1999.

Re: Datalog review please

Unread postby StangD » Wed Sep 16, 2015 11:24 am

red5.0fogger wrote:Eric,

did you start off with the u4p2 base tune on the homepage? I forgot if you did or not.


He did and at this point I am confused if he is still running mechanical idle or not. If so, I don't think he is supposed to touch many files per the write ups. I am just trying to help but fear we are telling him to adjust things he isn't supposed to touch unless he is working off a base U4P0 file.
94 Mustang GT-T5-347(Fordstrokers DIY)-TF190s,FTI Cam,Ported Victor EFI,42s-LMAF,85MM TB-Nitrous-Suspension mods and DRs.
CBAZA-TM40

12.1 @119.50 NA

Pulling baby wheelies and breakin stuff.
StangD
Supporting Member 25
 
Posts: 490
Joined: Thu Aug 20, 2015 7:14 am
Name: Dewayne
Vehicle Information: 94 Mustang GT T5 CBAZA TM40

347 TF190-Victor EFI-LMAF- 85MM TB- 42s,4.10s-DRs

Re: Datalog review please

Unread postby Fasterthangas » Wed Sep 16, 2015 11:35 am

StangD wrote:
Fasterthangas wrote:I replaced my IAC and the car runs somewhat better. My TPS now sits at 1.09v at idle versus the 1.15v or more from before.
The car still idles high in gear during cruise, but not as high. Now it's more like 1100rpm, Here's the kicker... If I tap on the gas; the idle drops down to 750-800rpm.
I can reproduce this every time. The car is not happy idling at 750rpm in gear. It will sometimes just stall. I then can only start the engine if I feather the throttle and two foot it into gear while keeping the revs up. The car takes off and the cruise idle jumps back up.


Sounds like small progress. And I wonder if Red50foggers dashpot suggestion might be something to tweak soon. Regarding being able to knock idle down with a pedal tap might be a clue. I'd verify again it isn't something mechanical. Your TPS voltage is down to something more normal now so probably not, With an assistant in the car, car in drive and foot on brake, I would put my hand on linkage and make sure throttle body linkage or cable allows TB to completely and easily shut. Doesn't sound like that's the problem, but throttle bodies are notorious for being sticky near the closed position.

I think 750 is going to be your idle target for now with that cam. I'll be amazed if it doesn't always lope some and hopefully you'll be able to deal with that with your auto. Getting the idle air/fuel right will probably be very important to you once you re-verify no vacuum leaks. I am going to look at Decipha's idle writeup and see what might be possible on my car as far as taming the cam lope some. If you are still running mechanical idle and I am not, then anything I do won't be useful info to you.


Maybe I'm doing base idle reset wrong? I shut the engine off with key off before unplugging sensors, spout. I fire engine and adjust idle with car in Drive. Shut car off and plug everything back in. Fire her up and drive.
Fasterthangas
Power Poster
 
Posts: 676
Joined: Sun Aug 02, 2015 1:28 pm
Location: AZ
Name: Eric
Vehicle Information: '95 Mustang GT
347 SBF
10.0:1 cr
Systemax ll
230/238 @ .050 custom cam
AFR Renegade 185 heads
Ford Racing EV14 34lb. injectors
90mm Lightning MAF
4" CAI
Accufab 75mm TB
T5
3.73's
1-3/4" shorty headers into 2.5" duals out the back with H pipe. Jones Maxflow straight through mufflers

Re: Datalog review please

Unread postby Fasterthangas » Wed Sep 16, 2015 11:37 am

StangD wrote:
red5.0fogger wrote:Eric,

did you start off with the u4p2 base tune on the homepage? I forgot if you did or not.


Michael suggested I do a base idle rest. I did it per his writeup. I'm not doing mechanical idle and on a side note my ISPIBR never moved from 0.0000.

He did and at this point I am confused if he is still running mechanical idle or not. If so, I don't think he is supposed to touch many files per the write ups. I am just trying to help but fear we are telling him to adjust things he isn't supposed to touch unless he is working off a base U4P0 file.
Fasterthangas
Power Poster
 
Posts: 676
Joined: Sun Aug 02, 2015 1:28 pm
Location: AZ
Name: Eric
Vehicle Information: '95 Mustang GT
347 SBF
10.0:1 cr
Systemax ll
230/238 @ .050 custom cam
AFR Renegade 185 heads
Ford Racing EV14 34lb. injectors
90mm Lightning MAF
4" CAI
Accufab 75mm TB
T5
3.73's
1-3/4" shorty headers into 2.5" duals out the back with H pipe. Jones Maxflow straight through mufflers

Re: Datalog review please

Unread postby StangD » Wed Sep 16, 2015 11:45 am

Fasterthangas wrote:
StangD wrote:
red5.0fogger wrote:Eric,

did you start off with the u4p2 base tune on the homepage? I forgot if you did or not.


Michael suggested I do a base idle rest. I did it per his writeup. I'm not doing mechanical idle and on a side note my ISPIBR never moved from 0.0000.

He did and at this point I am confused if he is still running mechanical idle or not. If so, I don't think he is supposed to touch many files per the write ups. I am just trying to help but fear we are telling him to adjust things he isn't supposed to touch unless he is working off a base U4P0 file.


Pretty sure the -2 files is written for mechanical idle. I believe you still do a base idle reset with mechanical idle per the writeup. Perhaps I misinterpretted the statement that is in bold in the idle air writeup?

And unplugging sensors with key off is safest. I wanted to verify my old IAC was working. I believe you can do that with logs too.
94 Mustang GT-T5-347(Fordstrokers DIY)-TF190s,FTI Cam,Ported Victor EFI,42s-LMAF,85MM TB-Nitrous-Suspension mods and DRs.
CBAZA-TM40

12.1 @119.50 NA

Pulling baby wheelies and breakin stuff.
StangD
Supporting Member 25
 
Posts: 490
Joined: Thu Aug 20, 2015 7:14 am
Name: Dewayne
Vehicle Information: 94 Mustang GT T5 CBAZA TM40

347 TF190-Victor EFI-LMAF- 85MM TB- 42s,4.10s-DRs

Re: Datalog review please

Unread postby Fasterthangas » Wed Sep 16, 2015 12:09 pm

StangD wrote:
Fasterthangas wrote:
StangD wrote:
red5.0fogger wrote:Eric,

did you start off with the u4p2 base tune on the homepage? I forgot if you did or not.


I have a habit of taking things literally. When he said base idle reset; I did just that. I'll try mechanicle idle again but currently at hospital.

Michael suggested I do a base idle rest. I did it per his writeup. I'm not doing mechanical idle and on a side note my ISPIBR never moved from 0.0000.

He did and at this point I am confused if he is still running mechanical idle or not. If so, I don't think he is supposed to touch many files per the write ups. I am just trying to help but fear we are telling him to adjust things he isn't supposed to touch unless he is working off a base U4P0 file.


Pretty sure the -2 files is written for mechanical idle. I believe you still do a base idle reset with mechanical idle per the writeup. Perhaps I misinterpretted the statement that is in bold in the idle air writeup?

And unplugging sensors with key off is safest. I wanted to verify my old IAC was working. I believe you can do that with logs too.
Fasterthangas
Power Poster
 
Posts: 676
Joined: Sun Aug 02, 2015 1:28 pm
Location: AZ
Name: Eric
Vehicle Information: '95 Mustang GT
347 SBF
10.0:1 cr
Systemax ll
230/238 @ .050 custom cam
AFR Renegade 185 heads
Ford Racing EV14 34lb. injectors
90mm Lightning MAF
4" CAI
Accufab 75mm TB
T5
3.73's
1-3/4" shorty headers into 2.5" duals out the back with H pipe. Jones Maxflow straight through mufflers

Re: Datalog review please

Unread postby Fasterthangas » Wed Sep 16, 2015 12:11 pm

Look for my reply above. It's kind of hidden. Typing on my phone and I messed up.
Fasterthangas
Power Poster
 
Posts: 676
Joined: Sun Aug 02, 2015 1:28 pm
Location: AZ
Name: Eric
Vehicle Information: '95 Mustang GT
347 SBF
10.0:1 cr
Systemax ll
230/238 @ .050 custom cam
AFR Renegade 185 heads
Ford Racing EV14 34lb. injectors
90mm Lightning MAF
4" CAI
Accufab 75mm TB
T5
3.73's
1-3/4" shorty headers into 2.5" duals out the back with H pipe. Jones Maxflow straight through mufflers

Re: Datalog review please

Unread postby red5.0fogger » Wed Sep 16, 2015 12:20 pm

Houston we have a problem! I think it's going into failure mode if you unplug everything before you start it. Its' seeing a dead tps sensor and spits a code. The first line in the idle air write up reads you unplug the stuff once the engine is warm. I can't say for sure this is the issue but who knows. Can you give it a shot this way?
red5.0fogger
Premium Member
 
Posts: 476
Joined: Mon Oct 06, 2014 5:02 pm
Name: George
Vehicle Information: 86 GT, stock block, twisted wedge heads, Anderson N41 cam, cobra intake, 180 shot, 3.73 gears, T-5 trans, 24# injectors, 155Lph fuel pump, 73mm C&L mass air meter, moates QH tuned by Decipha, Mac 1 5/8 shorty headers, Flowmaster 2 chambers, Drag radials, South Side control arms circa 1999.

Re: Datalog review please

Unread postby Fasterthangas » Wed Sep 16, 2015 12:38 pm

red5.0fogger wrote:Houston we have a problem! I think it's going into failure mode if you unplug everything before you start it. Its' seeing a dead tps sensor and spits a code. The first line in the idle air write up reads you unplug the stuff once the engine is warm. I can't say for sure this is the issue but who knows. Can you give it a shot this way?

I also took it the way you did but when I asked; it seems I was told that my way was ok? Some of these small details aren't clear to folks that didn't write them.
Fasterthangas
Power Poster
 
Posts: 676
Joined: Sun Aug 02, 2015 1:28 pm
Location: AZ
Name: Eric
Vehicle Information: '95 Mustang GT
347 SBF
10.0:1 cr
Systemax ll
230/238 @ .050 custom cam
AFR Renegade 185 heads
Ford Racing EV14 34lb. injectors
90mm Lightning MAF
4" CAI
Accufab 75mm TB
T5
3.73's
1-3/4" shorty headers into 2.5" duals out the back with H pipe. Jones Maxflow straight through mufflers

Re: Datalog review please

Unread postby StangD » Wed Sep 16, 2015 1:13 pm

I've seen a lot of base idle reset procedures over the past decade that don't even involve unhooking the TPS at all. Usually it goes....

Clear KAMs and disconnect IAC, restart car and do the adjusting thing, hook the IAC back up and go. The TPS is gonna relearn the new base TPS reading next time you restart the engine anyhow right?

Regardless of when you unhook sensors the PCM is gonna notice things aren't right in short order. Not arguing with you Red, just throwing out some thoughts.

Our tuning Swami will be by to settle this soon enough. :)

And if your tune doesn't look like this you aren't running mechanical idle. (from the Idle Air Writeup)

To incoroporate Mechanical Idle Control in your tune, simply set:
PSIBRN 0.0000
UPDATM 255
FN875N Y-axis to all 0.600
ITHBMA 0.000
FN800 Allow 0% ISCDC at 0 lbs/hr, remove clip of 10%, Clip max ISCDC to 98%, reduce 100% values
FN1862 / FN1861 Divide entire table (all cells) by 6, this will result in a value of 0.172 at the top warm ECT cells that the engine normally operates at
94 Mustang GT-T5-347(Fordstrokers DIY)-TF190s,FTI Cam,Ported Victor EFI,42s-LMAF,85MM TB-Nitrous-Suspension mods and DRs.
CBAZA-TM40

12.1 @119.50 NA

Pulling baby wheelies and breakin stuff.
StangD
Supporting Member 25
 
Posts: 490
Joined: Thu Aug 20, 2015 7:14 am
Name: Dewayne
Vehicle Information: 94 Mustang GT T5 CBAZA TM40

347 TF190-Victor EFI-LMAF- 85MM TB- 42s,4.10s-DRs

Re: Datalog review please

Unread postby decipha » Wed Sep 16, 2015 4:02 pm

If your attempts failed you can very easily verify if the set screw is set correctly

from the idle air write up

Once the engine reaches a warm non-surging idle, log the IPSIBR payload, if IPSIBR is greater than > 0.050 you will need to OPEN the throttle stop on the throttle body to allow the engine to get more air at idle. If IPSIBR is at 0.0000 and the engine is idling 50 or more rpm greater than 800 rpm (or the NUBASE idle rpm value), then you will need to DECREASE the idle stop screw to get the engine to idle down.
Note: You must unplug the throttle position sensor anytime you OPEN the throttle set screw, otherwise the ecu will set the part throttle flag and go into dashpot and part throttle spark control. If you had to OPEN the throttle stop, be sure to shut off the engine and plug the TPS back in prior to restarting the engine. he engine must be at a warm stable idle in drive BEFORE unplugging the tps iac and spout

-------------------

If you unplug them before starting the engine it most likely wont start, if some how it does, youd have to open up the throttle stop significantly to reach a stable idle due to the additional friction at startup
User avatar
decipha
Tooner
 
Posts: 15325
Joined: Mon Jul 15, 2013 5:29 pm
Location: New Orleans, LA
Name: Michael Ponthieux
Vehicle Information: Supercoupin' x10
90 (4x 5spds) - Dante, Ruby, Daja, Ava
91 4r70w - Skarlett
92 (2x) 5spd & auto - Bianqa, Andrea
93 auto - Danika
94 5spd Rionda
95 auto Aisha
Vehicle 2 Information: Others:
00 Lincoln LS - Luanda
98 Camaro SS - Bounquisha
02 Harley F-150 - Sasasha
03 Marauder - DyShyKy
00 Explorer 5L - Bernyce

Re: Datalog review please

Unread postby Fasterthangas » Wed Sep 16, 2015 5:41 pm

decipha wrote:If your attempts failed you can very easily verify if the set screw is set correctly

from the idle air write up

Once the engine reaches a warm non-surging idle, log the IPSIBR payload, if IPSIBR is greater than > 0.050 you will need to OPEN the throttle stop on the throttle body to allow the engine to get more air at idle. If IPSIBR is at 0.0000 and the engine is idling 50 or more rpm greater than 800 rpm (or the NUBASE idle rpm value), then you will need to DECREASE the idle stop screw to get the engine to idle down.
Note: You must unplug the throttle position sensor anytime you OPEN the throttle set screw, otherwise the ecu will set the part throttle flag and go into dashpot and part throttle spark control. If you had to OPEN the throttle stop, be sure to shut off the engine and plug the TPS back in prior to restarting the engine. he engine must be at a warm stable idle in drive BEFORE unplugging the tps iac and spout

-------------------

If you unplug them before starting the engine it most likely wont start, if some how it does, youd have to open up the throttle stop significantly to reach a stable idle due to the additional friction at startup


I did the mechanical idle per your instructions above as I always have. My ISPIBR never changes. It's always at 0.000 so how could my throttle blade be open too far?
----------------------------
Duly noted and thanks. But....with U4P2 I should be using mechanical idle only. No?
Fasterthangas
Power Poster
 
Posts: 676
Joined: Sun Aug 02, 2015 1:28 pm
Location: AZ
Name: Eric
Vehicle Information: '95 Mustang GT
347 SBF
10.0:1 cr
Systemax ll
230/238 @ .050 custom cam
AFR Renegade 185 heads
Ford Racing EV14 34lb. injectors
90mm Lightning MAF
4" CAI
Accufab 75mm TB
T5
3.73's
1-3/4" shorty headers into 2.5" duals out the back with H pipe. Jones Maxflow straight through mufflers

Re: Datalog review please

Unread postby Fasterthangas » Wed Sep 16, 2015 5:42 pm

StangD wrote:I've seen a lot of base idle reset procedures over the past decade that don't even involve unhooking the TPS at all. Usually it goes....

Clear KAMs and disconnect IAC, restart car and do the adjusting thing, hook the IAC back up and go. The TPS is gonna relearn the new base TPS reading next time you restart the engine anyhow right?

Regardless of when you unhook sensors the PCM is gonna notice things aren't right in short order. Not arguing with you Red, just throwing out some thoughts.

Our tuning Swami will be by to settle this soon enough. :)

And if your tune doesn't look like this you aren't running mechanical idle. (from the Idle Air Writeup)

To incoroporate Mechanical Idle Control in your tune, simply set:
PSIBRN 0.0000
UPDATM 255
FN875N Y-axis to all 0.600
ITHBMA 0.000
FN800 Allow 0% ISCDC at 0 lbs/hr, remove clip of 10%, Clip max ISCDC to 98%, reduce 100% values
FN1862 / FN1861 Divide entire table (all cells) by 6, this will result in a value of 0.172 at the top warm ECT cells that the engine normally operates at


I believe mechanical idle is already written into my tune.
Fasterthangas
Power Poster
 
Posts: 676
Joined: Sun Aug 02, 2015 1:28 pm
Location: AZ
Name: Eric
Vehicle Information: '95 Mustang GT
347 SBF
10.0:1 cr
Systemax ll
230/238 @ .050 custom cam
AFR Renegade 185 heads
Ford Racing EV14 34lb. injectors
90mm Lightning MAF
4" CAI
Accufab 75mm TB
T5
3.73's
1-3/4" shorty headers into 2.5" duals out the back with H pipe. Jones Maxflow straight through mufflers

Smoke test

Unread postby Fasterthangas » Wed Sep 16, 2015 6:21 pm

I have a challenge for you guys. Do a smoke test on your engine with TB capped off and watch how much smoke comes out around the throttle shaft. My BBK has bearings top and bottom that the shaft passes through and pivots on. There are no bushings to wear out and my TB is brand new. I bet you'd be surprised.
Fasterthangas
Power Poster
 
Posts: 676
Joined: Sun Aug 02, 2015 1:28 pm
Location: AZ
Name: Eric
Vehicle Information: '95 Mustang GT
347 SBF
10.0:1 cr
Systemax ll
230/238 @ .050 custom cam
AFR Renegade 185 heads
Ford Racing EV14 34lb. injectors
90mm Lightning MAF
4" CAI
Accufab 75mm TB
T5
3.73's
1-3/4" shorty headers into 2.5" duals out the back with H pipe. Jones Maxflow straight through mufflers

Re: Datalog review please

Unread postby decipha » Wed Sep 16, 2015 6:44 pm

cool if ipsibr is 0 and your at your above dsdrpm then you need to close the screw to back the idle down
User avatar
decipha
Tooner
 
Posts: 15325
Joined: Mon Jul 15, 2013 5:29 pm
Location: New Orleans, LA
Name: Michael Ponthieux
Vehicle Information: Supercoupin' x10
90 (4x 5spds) - Dante, Ruby, Daja, Ava
91 4r70w - Skarlett
92 (2x) 5spd & auto - Bianqa, Andrea
93 auto - Danika
94 5spd Rionda
95 auto Aisha
Vehicle 2 Information: Others:
00 Lincoln LS - Luanda
98 Camaro SS - Bounquisha
02 Harley F-150 - Sasasha
03 Marauder - DyShyKy
00 Explorer 5L - Bernyce

Re: Datalog review please

Unread postby Fasterthangas » Wed Sep 16, 2015 7:29 pm

decipha wrote:cool if ipsibr is 0 and your at your above dsdrpm then you need to close the screw to back the idle down
If I back the screw out and shut car off; the engine won't start. I have to open the screw again.
Fasterthangas
Power Poster
 
Posts: 676
Joined: Sun Aug 02, 2015 1:28 pm
Location: AZ
Name: Eric
Vehicle Information: '95 Mustang GT
347 SBF
10.0:1 cr
Systemax ll
230/238 @ .050 custom cam
AFR Renegade 185 heads
Ford Racing EV14 34lb. injectors
90mm Lightning MAF
4" CAI
Accufab 75mm TB
T5
3.73's
1-3/4" shorty headers into 2.5" duals out the back with H pipe. Jones Maxflow straight through mufflers

Re: Datalog review please

Unread postby decipha » Wed Sep 16, 2015 7:39 pm

its not suppose to start with the iac unplugged

if it needs more iac to crank, go to the isc multiplier table in neutral and max out the cell at that ect and 0 seconds (start), she'll fire up with authority
User avatar
decipha
Tooner
 
Posts: 15325
Joined: Mon Jul 15, 2013 5:29 pm
Location: New Orleans, LA
Name: Michael Ponthieux
Vehicle Information: Supercoupin' x10
90 (4x 5spds) - Dante, Ruby, Daja, Ava
91 4r70w - Skarlett
92 (2x) 5spd & auto - Bianqa, Andrea
93 auto - Danika
94 5spd Rionda
95 auto Aisha
Vehicle 2 Information: Others:
00 Lincoln LS - Luanda
98 Camaro SS - Bounquisha
02 Harley F-150 - Sasasha
03 Marauder - DyShyKy
00 Explorer 5L - Bernyce

Re: Datalog review please

Unread postby Fasterthangas » Wed Sep 16, 2015 7:59 pm

decipha wrote:its not suppose to start with the iac unplugged

if it needs more iac to crank, go to the isc multiplier table in neutral and max out the cell at that ect and 0 seconds (start), she'll fire up with authority


Sorry. With the IAC plugged in; the engine won't start. I have to open the screw to get it fired again and then the idle is too high again.
Here's what I'm going to do tomorrow. I'm going to load the factory tune and insert injector, MAF, cubic inches, and crank PW and see if I have the same issues after a base idle reset. The only thing I question is which high and low injector slope to insert. Yours may be scaled and Ford's aren't? I'm going to run 39.15psi fuel pressure.

https://fordperformanceracingparts.com/parts/ics/m-9593-LU34A.pdf
Fasterthangas
Power Poster
 
Posts: 676
Joined: Sun Aug 02, 2015 1:28 pm
Location: AZ
Name: Eric
Vehicle Information: '95 Mustang GT
347 SBF
10.0:1 cr
Systemax ll
230/238 @ .050 custom cam
AFR Renegade 185 heads
Ford Racing EV14 34lb. injectors
90mm Lightning MAF
4" CAI
Accufab 75mm TB
T5
3.73's
1-3/4" shorty headers into 2.5" duals out the back with H pipe. Jones Maxflow straight through mufflers

Re: Datalog review please

Unread postby decipha » Wed Sep 16, 2015 8:08 pm

thats absolutely useless

if it needs more air just give it more air, kicking up the cell in the iac multiplier table will give it more air, exact same as cranking open the set screw
User avatar
decipha
Tooner
 
Posts: 15325
Joined: Mon Jul 15, 2013 5:29 pm
Location: New Orleans, LA
Name: Michael Ponthieux
Vehicle Information: Supercoupin' x10
90 (4x 5spds) - Dante, Ruby, Daja, Ava
91 4r70w - Skarlett
92 (2x) 5spd & auto - Bianqa, Andrea
93 auto - Danika
94 5spd Rionda
95 auto Aisha
Vehicle 2 Information: Others:
00 Lincoln LS - Luanda
98 Camaro SS - Bounquisha
02 Harley F-150 - Sasasha
03 Marauder - DyShyKy
00 Explorer 5L - Bernyce

Re: Datalog review please

Unread postby StangD » Wed Sep 16, 2015 8:15 pm

Whether it works out or not, as a tuning noob I know banging your head against the wall gets really old at some point. If it acts exactly the same on another tune you will know you have an issue not related to the tune and the attempt is still worth the effort. Sometimes a little experimentation is the best way to figure things out when you hit a wall. I did the same thing when I had an O2 wire almost burnt in half. It drove me nuts for weeks with intermittent problems.
94 Mustang GT-T5-347(Fordstrokers DIY)-TF190s,FTI Cam,Ported Victor EFI,42s-LMAF,85MM TB-Nitrous-Suspension mods and DRs.
CBAZA-TM40

12.1 @119.50 NA

Pulling baby wheelies and breakin stuff.
StangD
Supporting Member 25
 
Posts: 490
Joined: Thu Aug 20, 2015 7:14 am
Name: Dewayne
Vehicle Information: 94 Mustang GT T5 CBAZA TM40

347 TF190-Victor EFI-LMAF- 85MM TB- 42s,4.10s-DRs

Re: Datalog review please

Unread postby decipha » Thu Sep 17, 2015 10:41 am

No its not! If you know how somethibg functions and it doesnt function as you program it to then its not malfunctioning and the culprit lies elsewhere
User avatar
decipha
Tooner
 
Posts: 15325
Joined: Mon Jul 15, 2013 5:29 pm
Location: New Orleans, LA
Name: Michael Ponthieux
Vehicle Information: Supercoupin' x10
90 (4x 5spds) - Dante, Ruby, Daja, Ava
91 4r70w - Skarlett
92 (2x) 5spd & auto - Bianqa, Andrea
93 auto - Danika
94 5spd Rionda
95 auto Aisha
Vehicle 2 Information: Others:
00 Lincoln LS - Luanda
98 Camaro SS - Bounquisha
02 Harley F-150 - Sasasha
03 Marauder - DyShyKy
00 Explorer 5L - Bernyce

Re: Datalog review please

Unread postby StangD » Thu Sep 17, 2015 11:48 am

decipha wrote:No its not! If you know how something functions and it doesnt function as you program it to then its not malfunctioning and the culprit lies elsewhere


I knew that post was going to tick you off. He is very frustrated now after a couple months of hard work with little reward. His rpm launches in idle or in gear. Maybe a bad IAC motor can do that though I've never seen it bofore. His base idle set screw could be considerably off and not cause anything near as extreme his problems. I can turn mine a full turn or more and nothing too outrageous happens. A tiny vacuum leak won't cause this. I can pull a 3/8 vacuum line off my car without anything like what he is experiencing. He's done two smoke tests. Tie to try something different whether it works or not.

A fresh tune off the base bin will do him good. If nothing else he is becoming familiar with setting up spark and timing tables. We are using your spark and timing table data. He is learning and that isn't a bad thing. If the problem is identical to before then we have a clue it may not be in the tune at all. Sounds like a logical course of action to me.

Peace :)
94 Mustang GT-T5-347(Fordstrokers DIY)-TF190s,FTI Cam,Ported Victor EFI,42s-LMAF,85MM TB-Nitrous-Suspension mods and DRs.
CBAZA-TM40

12.1 @119.50 NA

Pulling baby wheelies and breakin stuff.
StangD
Supporting Member 25
 
Posts: 490
Joined: Thu Aug 20, 2015 7:14 am
Name: Dewayne
Vehicle Information: 94 Mustang GT T5 CBAZA TM40

347 TF190-Victor EFI-LMAF- 85MM TB- 42s,4.10s-DRs

Re: Datalog review please

Unread postby decipha » Thu Sep 17, 2015 11:58 am

it doesnt tick me off at all I just find it useless to try to work around a problem rather than addressing it directly
User avatar
decipha
Tooner
 
Posts: 15325
Joined: Mon Jul 15, 2013 5:29 pm
Location: New Orleans, LA
Name: Michael Ponthieux
Vehicle Information: Supercoupin' x10
90 (4x 5spds) - Dante, Ruby, Daja, Ava
91 4r70w - Skarlett
92 (2x) 5spd & auto - Bianqa, Andrea
93 auto - Danika
94 5spd Rionda
95 auto Aisha
Vehicle 2 Information: Others:
00 Lincoln LS - Luanda
98 Camaro SS - Bounquisha
02 Harley F-150 - Sasasha
03 Marauder - DyShyKy
00 Explorer 5L - Bernyce

Re: Datalog review please

Unread postby Fasterthangas » Thu Sep 17, 2015 12:23 pm

decipha wrote:it doesnt tick me off at all I just find it useless to try to work around a problem rather than addressing it directly

Michael, if I remember correctly; you said this is so easy that a kid can do it. Well that isn't the case for me as well as others after reading the forum day in and day out. I've racked my brain and two folks have tried to help. You also told me that the base tune would get me up and running where I could at least drive the car. I have gone through everything on this car and the results are horrible. The tranny still doesn't shift firm enough, idle is all over the place, the car surges and stalls. It's just crazy. The car literally ran better with the chip that came with it. I know who burnt that chip and he is an amateur at best. I now have a new TPS and IAC, car has no major vacuum leaks, engine is sound. I know you've been suggesting that I dial in an air table that escapes my mind at the moment but what happened to the base tune at least getting me some drivability? I think you've given up looking at my logs so I've been working with Dewayne and he's been very gracious in his efforts and time spent. I mean no offense but have you tried your CBAZA and U4P2 on a 94-95 auto car? Please tell me what I'm missing? My setup is pretty common.
Fasterthangas
Power Poster
 
Posts: 676
Joined: Sun Aug 02, 2015 1:28 pm
Location: AZ
Name: Eric
Vehicle Information: '95 Mustang GT
347 SBF
10.0:1 cr
Systemax ll
230/238 @ .050 custom cam
AFR Renegade 185 heads
Ford Racing EV14 34lb. injectors
90mm Lightning MAF
4" CAI
Accufab 75mm TB
T5
3.73's
1-3/4" shorty headers into 2.5" duals out the back with H pipe. Jones Maxflow straight through mufflers

PreviousNext

Return to <<--Tune Review-->>

Who is online

Users browsing this forum: Google [Bot] and 1 guest