Hi guys, Recently i installed a Schmiedmann high flow sport manifold and catalyst, which was a massive task and wish i never went down this road. I changed out the Front silencer (Horseshoe) as there was a horrible rasping sound when revving the car, and i could here the baffles had gone when it was up on the ramps. Now i have put another front silencer on and it still does the same horrible rasp. I thought about taking it out all together and put a straight through pipe but some say it would be loud as hell. I also have a power flow back box. Does anyone have ideas on what is causing this thing to rasp?