View Single Post
      10-29-2012, 05:40 AM   #8
leebermeister
Enlisted Member
 
Drives: 06 330i
Join Date: Jan 2010
Location: ATL

Posts: 43
iTrader: (0)

Your N51 should have a 3 stage intake manifold. Have your DISA in your manifold checked to see if the flaps or any associated parts are loose causing the sound. When you said the sound comes during heavy accel between 2 - 3,000 rpm makes me suspect it.
leebermeister is offline  
0
Reply With Quote