View Single Post
      02-05-2013, 01:45 PM   #3
italyix
Lieutenant
 
italyix's Avatar
 
Drives: '08 E90 M3
Join Date: Dec 2011
Location: Bay Area

Posts: 518
iTrader: (1)

2-3k RPM sounds like normal resonance from the engine. Mine does the same thing, primary cat delete...then again, exhaust is the least of my vibration worries...solid bushings contribute the most hehe
italyix is offline   United_States
0
Reply With Quote