I agree if you're gonna put exhaust, in order to make it sound good you are gonna need to spend a lot of money...on a BMW I wouldn't bother...unless you are going for performance which judging from your feedback you're not. If you do put exhaust though, it's a German car... keep it that way!Did somebody seriously ask what engine is in a 525?
Hey, did you know BMW designates the engine right in the name?
525 is a 5-series with a 2.5 liter engine
DONT PUT NO EXHAUST ON THAT SHIT until you swap to a M5 motor or at least 540
It will be loud, but not go anywhere when you gun it. If that's the effect you want, get a nice European exhaust.... Dinan...
Borla is a cheap brand