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QuarterHorse chip for sale

I have brand new, never used QH chip for sale. $200 free shipping
by vlydeka
Thu Sep 18, 2014 8:04 am
 
Forum: For Sale / Wanted
Topic: QuarterHorse chip for sale
Replies: 1
Views: 2215

Re: dialing air

it makes sense. Looks like my distributor wasn't in great condition, ignition coil was getting weak and completely died yesterday. New coil works great. Thank you for your help.
by vlydeka
Wed Sep 17, 2014 6:58 pm
 
Forum: Foxbody Tuning (GUFX)
Topic: dialing air
Replies: 13
Views: 3435

Re: dialing air

Update: replaced ditributor 2 days ago, engine ran fine after base timing was dialed in. Yesterday tried to start engine- didn't start. Advanced base timing by couple digrees, engine started, but didn't run too good and stalled, tried to restart- didn't start again. Now I don't get any spark from ig...
by vlydeka
Wed Sep 17, 2014 6:53 am
 
Forum: Foxbody Tuning (GUFX)
Topic: dialing air
Replies: 13
Views: 3435

Re: dialing air

is the same, it wouldn't idle below 1000RPM


I have distributor out and TFI resistance within specs. Can i check resistance on distributor? Or it can be checked only while engine is running?
by vlydeka
Sat Sep 13, 2014 12:52 pm
 
Forum: Foxbody Tuning (GUFX)
Topic: dialing air
Replies: 13
Views: 3435

Re: dialing air

Cleaned maf sensor and air filter, error code #26 is gone. No active error codes, but I still can't lower my idle speed. Now when engine speed drops below desired low idle speed IAC is getting signal to open from ECU (screen shot below) Checked IAC resistance =10ohm and it moves free by finger Is th...
by vlydeka
Sat Sep 13, 2014 11:03 am
 
Forum: Foxbody Tuning (GUFX)
Topic: dialing air
Replies: 13
Views: 3435

Re: dialing air

it's probably not related, but when engine was running fine I was reading scaling 101 and found that I need to scale my maf, because I have big PRO-M maf meter, that's when I started having starting and running issues. Here is my original maf transfer function 15.9998 4223.034 4.9309 4223.034 4.5911...
by vlydeka
Thu Sep 11, 2014 9:15 pm
 
Forum: Foxbody Tuning (GUFX)
Topic: dialing air
Replies: 13
Views: 3435

Re: dialing air

About 0.5V
by vlydeka
Thu Sep 11, 2014 5:03 pm
 
Forum: Foxbody Tuning (GUFX)
Topic: dialing air
Replies: 13
Views: 3435

Re: dialing air

this is what I'm trying to figure out, but can't find any issues. I get only one code during test is #26- MAF sensor voltage out of range, but after clearing codes and running the test again voltage always stays between 0.15 and 1.875V When I'm driving it looks like IAC duty is commanded by ECU, but...
by vlydeka
Thu Sep 11, 2014 4:37 pm
 
Forum: Foxbody Tuning (GUFX)
Topic: dialing air
Replies: 13
Views: 3435

dialing air

I have some issues with my '87 331 engine and I'm looking for help. Engine ran fine, but couple weeks ago I stated experiencing hard start. Checked fuel pressure (good), ignition coil (good), checked based timing (10deg). Wasn't able to check TFI or PIP yet. Will check TFI tomorrow (don't have socke...
by vlydeka
Tue Sep 09, 2014 8:12 pm
 
Forum: Foxbody Tuning (GUFX)
Topic: dialing air
Replies: 13
Views: 3435

Re: after AIRFLOW scaling cold start issues

Update: Looks like this issue doesn't have anything to do with the cal... at least starting portion. Now starting is getting worse and engine dies when it’s warm on deceleration. So far I was able to check fuel pressure and it looks good. I think it’s spark related. Just before engine stalls I get e...
by vlydeka
Tue Sep 09, 2014 10:01 am
 
Forum: Foxbody Tuning (GUFX)
Topic: after AIRFLOW scaling cold start issues
Replies: 3
Views: 1241

Re: after AIRFLOW scaling cold start issues

Thank you for taking a look at my cal
by vlydeka
Tue Sep 02, 2014 6:00 am
 
Forum: Foxbody Tuning (GUFX)
Topic: after AIRFLOW scaling cold start issues
Replies: 3
Views: 1241

after AIRFLOW scaling cold start issues

I was running my cal for a while now, but my PRO-M maf meter was all the way to 4000kg/hr. I applied scaling percentage (2.81) to all parameters but one- AIR_MAN_VOL "Manifold Volume". This one is not available in my strategy (GUFB). Now I'm experiencing two issues- engine wouldn't start w...
by vlydeka
Mon Sep 01, 2014 6:21 pm
 
Forum: Foxbody Tuning (GUFX)
Topic: after AIRFLOW scaling cold start issues
Replies: 3
Views: 1241

Re: gufb breakpoint

Yesterday I was scaling airflow. And have a question about breakpoint. I'm using 42# injectors, what is correct breakpoint for this size injector before reducing by scaling percentage? (EECIV) from injector flow data: FRPP 42 lb/hr @ 39.15psi F302 Low Slope 46.066 High Slope 43.009 Breakpoint 0.0000...
by vlydeka
Wed Aug 27, 2014 8:08 am
 
Forum: Foxbody Tuning (GUFX)
Topic: gufb breakpoint
Replies: 11
Views: 3111

Re: Scaling change perload

Today I downloaded fresh copy of A9L2 and built a cal with my changes, but had same result. Then I copied AIR and IDLE variables to the new A9L2 cal from the cal that I used before. Had a really good results driving the car. Then I compared two cals, deleted changes that are obvious (MAF TF, Injecto...
by vlydeka
Sun Oct 27, 2013 5:13 pm
 
Forum: Foxbody Tuning (GUFX)
Topic: Scaling change perload
Replies: 16
Views: 4177

Re: Scaling change perload

maybe GUFB had different strategy release and my old cal was build in older version and A9L2 in new and I need to update strategy?
by vlydeka
Sat Oct 26, 2013 7:44 pm
 
Forum: Foxbody Tuning (GUFX)
Topic: Scaling change perload
Replies: 16
Views: 4177

Re: Scaling change perload

Fuel pump and relay about 1 year old and about 1200 miles. Since you mentioned that...something is going on with relays or ECU (i have both of them placed next to each other) when I load A9L2 cal to QH I hear buzzing/clicking noise for ~2s, then I try record datalog and most of the signals shows 0 (...
by vlydeka
Sat Oct 26, 2013 12:23 pm
 
Forum: Foxbody Tuning (GUFX)
Topic: Scaling change perload
Replies: 16
Views: 4177

Re: Scaling change perload

Today engine died at at different temperature, so it's not temperature related. I'm not sure, but could it be closed loop related? Maybe there is something wrong with my O2 sensors? I disabled adaptive learning, forced in open loop, did TB stop screw procedure with IAC and TPS unplugged, after that ...
by vlydeka
Sat Oct 26, 2013 11:18 am
 
Forum: Foxbody Tuning (GUFX)
Topic: Scaling change perload
Replies: 16
Views: 4177

Re: Scaling change perload

So it was just coincidence that it happened at this temperature. It couldn't overheat, because I drove it for less than a mile before engine died. Engine shutdown when I took a foot of the gas pedal. Do you think it's air, not fuel related? I really want to make this cal to work, I would feel more c...
by vlydeka
Fri Oct 25, 2013 7:53 pm
 
Forum: Foxbody Tuning (GUFX)
Topic: Scaling change perload
Replies: 16
Views: 4177

Re: Scaling change load to pct_load

I went for a ride today with my old cal, but I wasn't able to do WOT in second gear, tires were too cold and I couldn't keep the wheels from spinning, but I was able to get different engine speeds at different gears to populated the Fn035, then I made changes to A9L2 cal (MAF, inj and etc.). Went fo...
by vlydeka
Fri Oct 25, 2013 4:28 pm
 
Forum: Foxbody Tuning (GUFX)
Topic: Scaling change perload
Replies: 16
Views: 4177

Re: Scaling change load to pct_load

Great, thank you very much for your help.
by vlydeka
Fri Oct 25, 2013 9:55 am
 
Forum: Foxbody Tuning (GUFX)
Topic: Scaling change perload
Replies: 16
Views: 4177

Re: Scaling change load to pct_load

Injector timing is set to 500 in A9L2 bin file. When I upload my datalog to EA and select my cam (F303) with 1.7 rockers, injector timing calculated values are 412. Should I still use 500 and keep it simple? :) Since I'm switching to A9L2 cal with perload setting, here is what I'm planning to do ste...
by vlydeka
Fri Oct 25, 2013 7:21 am
 
Forum: Foxbody Tuning (GUFX)
Topic: Scaling change perload
Replies: 16
Views: 4177

Scaling change perload

I used a tune with PRLDSW set to Load%=Load. Now I'm planning to use A9L2 cal which is set to Scale Load%. Couple questions: To populate FN035 function, I need to do WOT run, does it mater which gear I will take a load number from? After I record Load numbers at given RPM and save it in FN035, I don...
by vlydeka
Thu Oct 24, 2013 3:50 pm
 
Forum: Foxbody Tuning (GUFX)
Topic: Scaling change perload
Replies: 16
Views: 4177

Re: Tuning without dyno

decipha wrote:all thats left is dialing in the cold enrichment and air multiplier


Air multiplier is dashpot?
Do you have similar document for cold enrichment and transient fuel?
by vlydeka
Thu Oct 24, 2013 10:29 am
 
Forum: Foxbody Tuning (GUFX)
Topic: Tuning without dyno
Replies: 11
Views: 3118

Re: Tuning without dyno

its the same, the tuner could put any value he wants in there I understand, but I hope that he did it right and checked as you explained in "timing 101" I'm trying to tune my engine without dyno as well. Once I'm happy with my tune I will take it to a dyno shop to see how close I got. Her...
by vlydeka
Wed Oct 23, 2013 7:02 pm
 
Forum: Foxbody Tuning (GUFX)
Topic: Tuning without dyno
Replies: 11
Views: 3118

Re: Tuning without dyno

reference the mbt chart on the timing write up From chart AFR and AFR 205 timing is 36 and 33, I have AFR165, should I use lower number just to be safe? I have a diablo chip from when engine, with these heads, was tuned at the shop, I will let you know what timing was set by the shop when I find so...
by vlydeka
Wed Oct 23, 2013 5:46 pm
 
Forum: Foxbody Tuning (GUFX)
Topic: Tuning without dyno
Replies: 11
Views: 3118

Re: Tuning without dyno

What is the best way to dial in spark table without dyno?
by vlydeka
Wed Oct 23, 2013 4:36 pm
 
Forum: Foxbody Tuning (GUFX)
Topic: Tuning without dyno
Replies: 11
Views: 3118

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