View Single Post
      12-29-2012, 04:15 AM   #3
Tiago@VRSF
BimmerPost Supporting Vendor
Tiago@VRSF's Avatar
United_States
218
Rep
10,397
Posts


Drives: E92 335i, F30 328i, F82 M4, i8
Join Date: Dec 2007
Location: Hudson, MA

iTrader: (96)

Garage List
Send a message via AIM to Tiago@VRSF
The downpipes are either hitting the subframe or you're experiencing wastegate rattle.

My money is on wastegate rattle.