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Originally Posted by Moezer
id like to know this also because I want the x5 to sound a bit nicer then stock
I did put a supersprint catback on my e36 and at first it was loud then it calmed down after a few weeks
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From the indise it doesnt sound too much but if im on the outside and hear a 4.4 drive by man im always impressed. i want somene to drove circelses around me in my car..
Spelling i know