[White1]

Hi all, i know this has probably been asked many, many times, but here it goes again...Is putting the stock 135i muffler onto a 128i, do the same thing as putting the BMW Performance exhaust for the 128i on? Or is the stock 135i muffler same as the stock 128i muffler?

I have a 135i muffler to use...now im just wondering wether or not its worth the work, and loss of warranty on my car?

thanks in advance for any input.