Originally Posted by topaz330
just curious, did you notice a difference in sound between the m6 exhaust and the f10 m5 exhaust? I'm in the same dilemma where I have a deal in place for both. The issue is that the m5 exhausts buyer is in poland and hesitant from buying overseas. The m6 exhaust is cheaper and more local. I'd be replacing with new xpipe 3" all the way back either way. also did the vacuum hookup to the exhausts fit on both?
There's a big difference in sound between the two. I really like the M5 much better it feels more open and does not stop back pressure. The sound is a lot tighter and louder as well. I opened up the vacuum hookup to open position and locked it so all pipes are working. When the vacuum was closed the sound was very close to the M6 exhaust.