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Can anyone explain the performance or specifically the ECU differences between these cars? When did they go to Drive by wire? I may buy a used GIAC ECU for my 2001 (or 2001.5) A4 Q, and want to make sure I get the right one.
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Re: A4 2000, or 2000.5, or 2001, or 2001.5??? (zero9nine)

quote:[HR][/HR]Can anyone explain the performance or specifically the ECU differences between these cars? When did they go to Drive by wire? I may buy a used GIAC ECU for my 2001 (or 2001.5) A4 Q, and want to make sure I get the right one.
Thanks[HR][/HR]​
DBW introduced w/ 2000 model. Can't tell you ECU differences, but you CAN'T use ECU's from previous models years (i.e ECU's for 2000 or earlier) on your 2001 due to VVT that was introduced in MY2001. The ECU's are not compatible.
 

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Re: A4 2000, or 2000.5, or 2001, or 2001.5??? (Sal R)

Call you Audi service advisor and give him your vin #, he will tell you what kind of ecu (my S4 ecu is "M") you have. Then, look on www.audiworld.com and check the classifieds for a used ecu. Good luck.
 
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