Bimmerfest - BMW Forums - View Single Post - X3 35i - Exhaust Drone??
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Old 12-15-2012, 07:35 PM
leewtech leewtech is offline
Gone for a drive.
Location: USA
Join Date: Sep 2012
Posts: 100
Mein Auto: BMW, GM, Fountain
I think u have 2 issues. At cold start the exhaust runs through both outlets until the valve closes. Sounds awesome in my opinion. The highway drone sounds like tires to me not exhaust.

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