A4A1 Tuning Issues

non vehicle specific forum for tuning all other EEC-IV

A4A1 Tuning Issues

Unread postby 86VickyLX » Sun Nov 06, 2016 6:53 pm

I have the A4A1 ECU installed in my 86 Crown Vic, with the EDIS module and such to go along with it. After swapping the spark table and some idle tables, it seems to run ok. However, decelerating it leans out and sometimes stalls. I put a wideband in just to see if the HEGOs were actually telling the truth, and at idle the AFR is showing 22.5, and the engine is not happy about it. The fuel is all messed up, and I swapped the tables for fuel injector high and low slopes and MAF transfer from my A9P tune. The tables and such on the A4A1/CBAZA are quite different, so I'm lost on what to disable to make it just run off of the base fuel table so I can retune the fuel. Or is there something simple that I'm overlooking?

I ended up saying screw it and I installed the matching MAF to the ECU (along with the proper MAF transfer, to eliminate that variable, but still no difference in how it acts. I found out that the 94 panther utilizes 4 wire HEGOs and I do intend on replacing mine so that's proper, I picked up the sensors, but just have to wire in, in the meantime I'm gonna use the wideband while I have it hooked up to redial in the fuel. Please help!!

Base tune is the A4A2, which I just got working by updating to a new version of Binary Editor.
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Re: A4A1 Tuning Issues

Unread postby decipha » Sun Nov 06, 2016 9:01 pm

if your using the a4a2 then you dont swap tables or nothing just dial it in

what are you having issues with exactly?

if your using the fox harness did you repin it according to the new pin out?
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Re: A4A1 Tuning Issues

Unread postby 86VickyLX » Sun Nov 06, 2016 9:13 pm

I originally tried the factory tune, as my old style of BE wouldn't read the A4A2 tune.

It's running lean, and I am not sure what multipliers and such to disable to make it run only off of the base table.

I am running the main harness from the 94 Towncar, connected to the original harness fox/box sensors (EGR, IAC, TPS, O2 sensors and such)
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Joined: Tue Oct 08, 2013 7:32 pm
Name: John
Vehicle Information: 1986 Ford LTD Crown Victoria LX
Powered by a 5.0 Explorer Engine Bored .020" over, with GT40P heads, Cobra (GT) Cam, 1.72 Roller Rockers, controlled by A9P ECU with moates quarterhorse. Connected to an AOD transmission with Silverfox SPT-R Valve body with 3.55:1 rear differential.

Re: A4A1 Tuning Issues

Unread postby decipha » Sun Nov 06, 2016 9:52 pm

if your running the a4a2 then its running off the base table

its running lean that means you need to add fuel, either by reducing the slope or adding air via the maf transfer

is it not getting into closed loop? The narrow bands should tell you your exact fuel error
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91 4r70w - Skarlett
92 (2x) 5spd & auto - Bianqa, Andrea
93 auto - Danika
94 5spd Rionda
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Vehicle 2 Information: Others:
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00 Explorer 5L - Bernyce

Re: A4A1 Tuning Issues

Unread postby 86VickyLX » Sun Nov 06, 2016 10:11 pm

Ok, I will attach a datalog as well. I was not aware that the multipliers were all disabled, I was under the impression that I had to turn them off, like I had to with the A9P.
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Vehicle Information: 1986 Ford LTD Crown Victoria LX
Powered by a 5.0 Explorer Engine Bored .020" over, with GT40P heads, Cobra (GT) Cam, 1.72 Roller Rockers, controlled by A9P ECU with moates quarterhorse. Connected to an AOD transmission with Silverfox SPT-R Valve body with 3.55:1 rear differential.

Re: A4A1 Tuning Issues

Unread postby rustybolts55 » Mon Nov 07, 2016 11:43 am

I'm interested in this as well, I'm a bit confused by your wording Decipha, are the multipliers simply disabled in the A4A2 tune, and you have to re-enable them once you have dialed in fuel? Or is it made to run without the multipliers? Thanks!

-Phil
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Re: A4A1 Tuning Issues

Unread postby decipha » Mon Nov 07, 2016 1:20 pm

I have no idea what multilpliers yall are talking about
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91 4r70w - Skarlett
92 (2x) 5spd & auto - Bianqa, Andrea
93 auto - Danika
94 5spd Rionda
95 auto Aisha
Vehicle 2 Information: Others:
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98 Camaro SS - Bounquisha
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Re: A4A1 Tuning Issues

Unread postby 86VickyLX » Mon Nov 07, 2016 1:44 pm

On the A9P, there were multipliers that modified the Base Table, what he is asking, and I was wondering myself, are there any in the A4A2 calibration that also need to be disabled? Or is it as it is, just solely running off of the base table with no modifiers?
86VickyLX
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Posts: 43
Joined: Tue Oct 08, 2013 7:32 pm
Name: John
Vehicle Information: 1986 Ford LTD Crown Victoria LX
Powered by a 5.0 Explorer Engine Bored .020" over, with GT40P heads, Cobra (GT) Cam, 1.72 Roller Rockers, controlled by A9P ECU with moates quarterhorse. Connected to an AOD transmission with Silverfox SPT-R Valve body with 3.55:1 rear differential.

Something is Very Wrong

Unread postby 86VickyLX » Mon Nov 07, 2016 9:20 pm

Attempted dialing in the fuel tonight. While adjusting the low slope yielded changes (either stupid lean or stupid rich within 1 number ie: 21 vs 22) from 9.5:1-22.5:1, messing with the high slope did absolutely nothing. No matter what we put it to, at WOT, the fueling registered as 7.5:1. While it's true that the LAMBSES commanded by the ECU were 14.64:1, the readings on the wideband were not consistent at all. The readings would switch between 13.5 and 16.5, where I'm used to maybe even subtle changes like a few tenths of difference on the gauge. Open Loop was forced, so there were no KAMRFs besides 1.000, so there was no adaptive learning. Regardless of what the slopes were set to if we made the low slope value higher while driving (trying to lean out the enriched mixture), when idling the engine would run very lean and most of the time would just shut off. I could see maybe possibly the MAF transfer being off, however, on all points? It's the stock MAF and air box for the ecu. There's no way that it could be that off on all points, yet adjusting the fuel made it too rich, or too lean, and like I had mentioned before the high side adjustment made absolutely no difference. So what the hell am I doing wrong? Wideband software was not cooperating with binary editor, so didn't get any datalogs with that hooked up.

I included my tune with this reply. This is with the fuel injector slopes, breakpoint and crank pulse width set to what the specs are for my injectors via pops racing referenced from this thread here http://eectuning.org/forums/viewtopic.p ... =30#p98749
You do not have the required permissions to view the files attached to this post.
86VickyLX
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Posts: 43
Joined: Tue Oct 08, 2013 7:32 pm
Name: John
Vehicle Information: 1986 Ford LTD Crown Victoria LX
Powered by a 5.0 Explorer Engine Bored .020" over, with GT40P heads, Cobra (GT) Cam, 1.72 Roller Rockers, controlled by A9P ECU with moates quarterhorse. Connected to an AOD transmission with Silverfox SPT-R Valve body with 3.55:1 rear differential.

Re: A4A1 Tuning Issues

Unread postby 86VickyLX » Wed Nov 09, 2016 4:29 pm

No suggestions!?
86VickyLX
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Posts: 43
Joined: Tue Oct 08, 2013 7:32 pm
Name: John
Vehicle Information: 1986 Ford LTD Crown Victoria LX
Powered by a 5.0 Explorer Engine Bored .020" over, with GT40P heads, Cobra (GT) Cam, 1.72 Roller Rockers, controlled by A9P ECU with moates quarterhorse. Connected to an AOD transmission with Silverfox SPT-R Valve body with 3.55:1 rear differential.

Re: A4A1 Tuning Issues

Unread postby rustybolts55 » Thu Nov 10, 2016 5:59 pm

Wow, the high slope should be responding, 7.5 is really rich. Unless Decipha has a magical suggestion, I'd say maybe something is physically wrong with the computer or quarterhorse?
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Re: A4A1 Tuning Issues

Unread postby decipha » Thu Nov 10, 2016 9:34 pm

shoot a PM to sailorbob and get him to verify the high slope address
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Location: New Orleans, LA
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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


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