Stock/ZCP rear muffler mod (cut it open)?

[mynameisplayer]

Apart from the mods in this thread http://f80.bimmerpost.com/forums/sho...ht=exhaust+mod
has anyone done the E90 style mode on the rear muffler? Other than the X-pipe (and secondry cat delete?), making it straight through on open valve would bring it close to MPE?

[tom @ eas]

Originally Posted by mynameisplayer

Apart from the mods in this thread http://f80.bimmerpost.com/forums/sho...ht=exhaust+mod
has anyone done the E90 style mode on the rear muffler? Other than the X-pipe (and secondry cat delete?), making it straight through on open valve would bring it close to MPE?

Really no reason to on a valved-controlled exhaust.

[jstnstr]

Originally Posted by mynameisplayer

Apart from the mods in this thread http://f80.bimmerpost.com/forums/sho...ht=exhaust+mod
has anyone done the E90 style mode on the rear muffler? Other than the X-pipe (and secondry cat delete?), making it straight through on open valve would bring it close to MPE?

I would be interested in this as well... I have the AA midpipe and im not sure what everyone else is smoking but it certainly doesnt eliminate the rasp. The exhaust sounds louder for sure and maybe a little better but that embarrassing rasp is definitely very present under WOT at higher rpm