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325e low flow muffler

2K views 3 replies 2 participants last post by  downhiller 
#1 ·
My 325e has 230k miles and it is to quiet, i bought a $30 low resistance dtm muffler from ebay, i was just wondering if i put this on will it increase power or gas mileage? Also is it bad for the engine? Thanks
 
#2 ·
performance, no. gas mileage, no. louder, probably.

for performance you got to do both intake and exhaust, to do anything noticeable. and changing a muffler is changing exhaust, like doing a cat back or full exhaust.
 
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