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
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.
itll help the engine rev a tid bit quicker. but as long as the cat is still installed and flowing freely, no damage will be caused
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Related Threads
?
?
?
?
?
BimmerFest BMW Forum
11.4M posts
753.1K members
Since 2001
A forum community dedicated to BMW owners and enthusiasts. Come join the discussion about Bimmerfest events, production numbers, programming, performance, modifications, classifieds, troubleshooting, maintenance, and more! Bringing the BMW community together.