BMW F10 535i Muffler Delete Rev's 

Yes, mufflers do nothing for emissions. By the time the exhaust gases get to the muffler theyve already been converted.

nickdogg1993 yeah , but I though some emissions testing sites physically check for the muffler . Oh i didn’t realize I messaged you on two videos . I was looking for vids of muffler deletes and was just commenting on each one . Thanks for responding to both though . Sounds good

@@twinscoupe no problem, and if they check for the muffler they are just being ridiculous. From what ive seen/heard, they usually dont care unless its obnoxiously loud. Like straight headers loud, otherwise youre fine. This muffler delete is honestly quiet, my E60 550i was 2x as loud with a muffler delete.