just got 01 s60 (nice motor) i think its just the car what that would appreciate a pimped up image so for starters iv just gone out and bought a dump valve for it but you can hardly hear it. has an had this problem and if yes how can i sort it so it realy sounds good please can you help cause i had this problem with my fiat punto gt turbo and cost me hundreds and it still wasent sorted

 

Ok what brand of valve did you buy? I would buy a BOV (Blow Off Valve), HKS SSQV and Turbo XS Type H-RFL are veyr nice ones. I would attach it to your upper IC pipe if it is steel of aluminum and use the corisponding adapter peice for thsoe types of metals.

Also how much boost are you running? You might not be able to hear it well since your PSI (boost is low), for that get an ECU upgrade to get your boost up.