for those of you who want to keep the stock look, or a quiet exhaust but still want to get rid of the restrictive aspect of your stock exhaust....
this might just be the solution for you
http://www.atpturbo.com/Merchant2/merchant...tegory_Code=BCS
boost dependant exhaust valve
this might just be the solution for you
http://www.atpturbo.com/Merchant2/merchant...tegory_Code=BCS
boost dependant exhaust valve