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      01-24-2013, 02:05 PM   #29
n52330i
Private First Class
 
Drives: 330i
Join Date: Jan 2011
Location: Mississauga

Posts: 180
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Quote:
Originally Posted by Devas View Post
During cold startup it louder than stock, and you'll probably hear your turbo spooling, almost sounds like a loose metal piece in your exhaust. Once the car reaches 70 degrees, to me, it sounds like stock.
This is probably the OP problem also. My brother car sound the same
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