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What ECU works with A4ld trans?
#1

Anyone out there with an A4ld and an aftermarket tuner?
I think my ECU is dead and wanted to know what my options are.  I had a “heavy duty” rebuild done to my A4ld and a lot of engine mods and I think if I have to replace the ECU anyways, it’s time to extract all that extra power my stock ECU can’t capture.  Most of the people here are doing serious mods on vehicles with stick shifts.  Anyone with autos have aftermarket tuners?  MS or Pimp?  I want to retain the lock up OD functionality.
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#2

PiMPx can use a programmable I/O to trigger OD under the conditions you select.
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#3

Stinger, so glad you posted. Would that be the PiMPx standalone with batch fire EFI? Would this be an add on to it or already included? Is the program readily available? Can the unit be ordered preprogrammed with this function? I’m not confident in my programming capabilities to be able to do that on my own. I previously bought the Quarterhorse in a feeble attempt to tune it, but I never did more than minor changes to the timing tables. I’m too afraid I’ll blow it up.
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#4

Yes, that's what it is.

It's not an add-on, it's built-in. The programmable outputs can be used for "whatever" so it's not specifically for overdrive but others have used it for that.

Many of our customers have no prior tuning experience so that's not really an issue. As long as you can read and follow directions exactly as written and you're willing to use our support forum if questions arise or you want tuning help then it shouldn't be a problem.
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#5

As I understand it, the A4LD uses solenoids to engage the overdrive and lock up the converter. Does anyone know what strategies are used from the ECU for each of those functions?
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#6

Mine is 8UA, but as far as what part of it controls the trans, I have no clue. And that's the part that makes me nervous. If it's as easy as copying some lines of code and putting it in, that's ok, but if I have to figure it all out myself, that's a different story.
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#7

Will my Innovate wide band O2 work with the PiMPx?
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#8

THIS is what i did before i got my PIMP. the A4LD the early transmission are 2wire one solenoid for lock up. you had to shift into o/d the later is a 3 wire up to 95 1/2 they have 2 solenoids one for o/d and one for 3to4 engagement. the converter must lock up in order to get o/d on a 2wirit e and a 3 wire . a acv signal is sent from the vss to the ecm (there is a preset speed in the ecm) power comes to the solenoids . grounds are controlled by the ecm to turn on solenoids . so what i did was use a B&M controller for lockup and o/d easy to hook up fun to drive. you can set lockup at speeds from 30 mph to 90 mph .it works good in the hills you can turn off o/d but still have lockup . i put a old school high/low beam floor switch in to control o/d only lockup is controled B&M so if you like to play turn it off . good for light to light then turn on and you have lockup and over drive. i think i said this right. B&M controllers are about $250.00 THANK YOU
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#9

Now that you have a PIMP, do you use it to control the A4ld solenoids? If so, what did you use to trigger activation for the OD and lockup? Do you continue to use the VSS?
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#10

I want it to work like the stock ecu. If I can Change the cruising speed that it engages, great, but the stock functionality would be just fine. But The whole point of having an automatic, is that it works automatically. I don’t want to remember to shift in and out of lockup or manually go into 4th gear. If Im cruising At 45 or 50 and want to mash the pedal To pass, I want it to Downshift and take off. Then go back to lock up once I’m cruising again. No buttons or switches to press. My daily commute is stop and go from 0 to 50 mph.
I’m surprised this hasn’t been properly addressed. If the PiMPx can run nos, turbo timer and stuff, can’t two of the spare injector inputs or other spare inputs be used for lockup and OD without messing with the wire harness?
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