Quote:
Originally Posted by Manolito
I personally would like to know how to change the gear ratio of the rear end.
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I had one before and I'm thinking of getting another E46 (ideally a ZHP); I too always wanted to do a diff swap on mine, and I'd say all the stuff people know effs up right after they're out of warranty - radiator and water pump replacement. If you're including the M3, a tutorial on valve adjustment.