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E90/E91/E92/E93 (2006 - 2013)
The E9X is the 4th evolution of the BMW 3 series including a highly tuned twin turbo 335i variant pushing out 300hp and 300 ft. lbs. of torque. BMW continues to show that it sets the bar for true driving performance! -- View the E9X Wiki

 
 
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Old 10-03-2012, 07:26 AM
8355adam 8355adam is offline
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Location: VA
 
Join Date: May 2012
Posts: 148
Mein Auto: 2006 330I ZSP
Butterfly Valve wide open

I have been experiencing some unpleasant rattling noises at low RPMs after checking out forums etc i narrowed it down to my exhaust butterfly valve not fully opening or closing. I assumed that it was not closing properly and was therefore causing the rattle. I checked it whilst the engine was off and at idle and it is wide open. I thought i was just going to attempt the gold tee/cable tie fix to keep it wide open at low RPMs both solving the rattle and giving a nice exhaust note. However seeing as it is already wide open all the time without any deliberate modifications and the fact that is rattles still, does this mean that i need a new actuator?
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