Quote:
Originally Posted by Tylerhunt550
no no, I just want the sound of the m5 muffler on the 550i but yea they are stock mufflers on it now and just aftermarket diffuser. but aren't the m5 mufflers a little bit more in?
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Yes they are but when you go to install your M5 muffler the shop with align it for you to fit your diffuser.
If you plan on using the complete piping then you'll have some issues but it can be modified to fit.