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      02-05-2013, 03:13 PM   #4
Castr_85M's Avatar

Drives: AW/Fox 6MT E90 M3
Join Date: Sep 2009
Location: NYC

iTrader: (7)

Originally Posted by FormulaMMM View Post
If I'm reading you correctly, the test pipes have been in since you've had the issue.

Lower gears, 2-3k rpm, directly under the car. Sounds exhaust related to me (primary cat delete). Have you checked the test pipe connections? Even if they're sound seems some vibration could emanate from them. I just installed Akra Evo this past weekend after running only an axle back -- noticing all kinds of interesting sounds, resonance, and perhaps some vibration after cat delete. Nothing quite as consistent as you report though.
The vibration came early december when i still had my AA Race Xpipe. The AA was installed within first month of ownership (August2012).

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