Recently my friend totaled his VW R32 and has offered to sell me his aftermarket GIAC ECU for cheap. I drive a 2000 9-3 SE and I was just wondering if it would be compatible with my car or not before buying/attempting to make the modification. If anyone could help me out it would be much appreciated.

 

Why would you want that ECU? You can tune the ECU that is in your car already just fine...