I'm sure this has been covered quite a few times, but I can't seem to find to much on it. I have a 2.5 straight pipe setup from my e24 that I want to put on, but is that gonna be to big of a piping size for a stock m10? Or is it better to to go with 2 or 2.25? Thanks guys
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best exhaust piping size for m10?
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I too am intrested in this. also does the stock M10 need a lil backpressure from a muffler set up, or will it preform ok with a flow thru or straight pipe (yes I know its loud, but no louder then the straight piped rabbits 2.3 mustangs and 2.5 daytonas on the track as well)
sigpic1984 318i Total conversion to a DIRT race car.
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Originally posted by 401e30 View Post2.5" is too big, period. With that large of an exhaust diameter with an old and tired 318 you will lose all low range drivability and inevitably lose power. With a "track/street car" I doubt you will be wide open at all times of operation.
P84 318i drift car
04 mk4 gti 1.8t
96 e320
63 plymouth valiant
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