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TDI Power Enhancements Discussions about increasing the power of your TDI engine. i.e. chips, injectors, powerboxes, clutches, etc. Handling, suspensions, wheels, type discussion should be put into the "Upgrades (non TDI Engine related)" forum. Non TDI vehicle related postings will be moved or removed. Please note the Performance Disclaimer.

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Old September 30th, 2011, 03:29   #1
muresan_c_dan
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Join Date: Sep 2011
Location: Cluj, RO.
Default 1996 A6 (C4) AAT, what ECU?

Hy guys, it's a nice thing you've got going on here!
I did use the Search tool, but I didn't really find anything, so here it goes:

Do you know what ECU is in the 1996 C4 with the AAT (85kw) engine? Could it, by any chance be the same as the AEL? (slightly detuned)...

If not, what would be an easy and reliable way of remapping the old style ECU?
Thing is, it I'd like to work out 150-170hp out of it, not pushing it because of the auto gearbox. I have to work on the injectors, so new (bigger) nozzles are not a problem, the turbo is on its way out, so in goes a hybrid (or perhaps a VNT, which I hear would spool smoother, and therefore be gentler on the g-box). ..and some other little bits...

Thank you, cheers
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Old September 30th, 2011, 05:46   #2
saab9turbo
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Join Date: May 2011
Location: norway
Fuel Economy: 5l/100km
Default

Lift up the passenger side carpet and Check the number on the ecu cover, and post that, i belive that it's the same as the 2.5 aat audi 100 ecu coupled with the ecu for the gearbox.
But be carefull with the carpet, it tears pretty easy. I have the same car and auto box, and nozles give a good raise in overtaking
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Old September 30th, 2011, 06:59   #3
muresan_c_dan
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Join Date: Sep 2011
Location: Cluj, RO.
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The sticker isn't looking so good, but it says:
Bosch 0 281 001 128
Audi 4a0 907 401

Other sticker isn't readable!
I guess the way around this would be to open the case, rip (carefully) the chip out, remap it, throw it (carefully) back in there.... and hope for the best. Wright?
Guess you can tell I'm new at this .

Thank you!
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Old September 30th, 2011, 14:26   #4
saab9turbo
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Location: norway
Fuel Economy: 5l/100km
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Rip the ecu out, or get one in a scrapyard and send it to someone that can tune it that is cheaper than risking terminal dammage to the ecu
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