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335imagna
04-09-2008, 10:49 PM
I recently installed a full catback Magnaflow exhaust system for my 335i, but i noticed that once the RPM hits the 1500-2000 range there is a vibration in the rear ash tray, right under the AC vents in the back seat. Does anyone else experience this? I know the exhaust is causing this, Any solutions?

wolf
04-10-2008, 09:13 AM
only between 1500-2000...goes away if you go higher rpm?

335imagna
04-10-2008, 10:41 AM
yea pretty much...sometimes the vibration even starts around 1300 RPM but fades away right after 2100 RPM

Penforhire
04-10-2008, 10:53 AM
If you can determine what flat surface is vibrating you can damp it directly with a piece of Dynamat or similar. This is a hazard of all non-OEM exhausts (BMW trys to tune out all annoying resonances).