A4 (B5 Platform) Discussion Discussion forum for the B5 Audi A4 produced from 1995-2001 B5 FAQ

ECU coding & swapping

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Old Jun 7, 2004 | 12:24 PM
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From: Sioux Falls, South Dakota
Default ECU coding & swapping

I had recently traded my A4 in for an A6 but i kept most of the aftermarket parts including the APR chipped ecu.

The APR chipped ECU from my old A4 was labeled 4B0 906 018 BG which I see APR shows as a 2000 DBW which is correct. I have a local guy here that wants to buy the ecu but he has a 2001 quattro (mine was FWD) and his ECU is labeled 4B0 906 018 CH

Anyone know if this is possible with some recoding of the chipped ECU (if needed?) with my VAG? Not sure if there were significant changes between 2000 and 2001 models that would make this impossible?

Any info would be greatly appreciated.
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Old Jun 7, 2004 | 12:27 PM
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Old Jun 7, 2004 | 12:36 PM
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Default ive seen recoding done with a VAG; manual to tip

i think it shouldnt be too much trouble, but check with people that know more
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Old Jun 7, 2004 | 12:46 PM
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Default BG is a passat ecu and can be used on a 2000 only

You cant recode it to be used for a 2001 A4 since it is not the same.
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