Question about 2000 Audi A4

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Audi 2.5 tdi Quattro Avant

Can you change the engine code by replacing ECU unit. I have an AFB engine and have not been able to find a replacement but I have seen plenty of other engine codes so it would be helpful if you could somehow change something (ECU unit) to accept another engine code. Can anyone help? Thanks

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    Engine dont starting and dont comonicating wheth scanner

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I don't think this is possible. Your AFB engine requires an AFB-compatible ECU. The AFB code is specific to that engine design due to parameters of the engine itself. My 99 A4 has the AHA V6 30v engine, which can only be controlled by an AHA ECU. Changing the ECU does not change the engine itself, and trying to use an ECU from a different engine code will not work. If you want to use a different engine, you'd need that new engine's ECU, engine bay harness, accessories and mounts, and possibly even the chassis harness from the donor car. It'd be a tremendous amount of work.

Posted on Aug 07, 2008

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