the silencers aren't a problem... they just severely hinder the sound of the exhaust. it gives it a very high... raspy tone... pretty much because all the exhaust gas from half of the motor is going through a hole thats got a 1" diameter. sounds like one huge exhaust leak. saturday... prior to bolting the silencers back in... it was throaty and low. im basically just trying to quiet it down a bit so i can run it w/o the silencers. i think that resonators will deaden it somewhat. that way i can remove the stupid silencers and regain the deep clean tone