Has anybody driven or raced one before? I can beat my mates stock 135i some what comfortably but he has now just bought and instaled JB3 plug and play, apparently these cars are detuned a fair bit and big gains come from JB3. 80hp or so. Anybody here have any experiance or know anybody with a 135i with a jb3. I think it should be a really close race, what do u guys think will happen?