Quote:
Originally Posted by singhbimmerwala
Hello All,
I am new to these modifications. I have a 440i (B58) leased. I was wondering if installing just a midpipe with stock exhaust would increase much HP and sound? Or just go with new exhaust and midpipe together? Has anyone experienced this?
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Midpipe will not increase power, it will increase sound even on stock exhaust
Catback exhaust (midpipe + rear section) will always sound better