so we bought a boosted integra for my brother and when we pushed it we noticed the blow off valve didnt sound like we'd expect it..we went on youtube and searched the sound of the greddy type rs and ours sounds alot different then theres..the car is tuned at 1.2 bar..people say to get a better sound the boost needs to be high but with my greddy type s at 9 pounds it sounds way louder than his..what could b the problem..all vacuum lines are perfect