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  1. E39 M5 and E52 Z8 Discussion
    So i raced my buddy who has a stock 335i 6MT from a 40 roll and i demolished him, the next day he gets a jb4 chip and e85 tune and my car stayed with him in 2nd but 3rd he just pulled on me. My question is this, I'm thinking of chipping my stock 2002 m5 and I would like to know which one would...