its just a sound when you let go of the gas when it is under boost. if you dont want it, just simply dont do it. but its a nice way to let people know you got a turbo. and its fun.
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Now with stage 1 
Just a GT... Thats tearin\' arse on the driveway.
http://www.cardomain.com/id/themanfrmokinawa
14.626 @ 94.74
stage 0 , intake and exhaust only.
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