I have a gnarly pipe on and it did help the power out just a little, it was worth the $,I am still currently running the stock silencer if I put on a pc2 can I expect a noticeable increase in power or will it just sound better and give it a better appearance, I don't care what others think when they see my bike I just want my money's worth if I spring for a silencer, I like the stock cause its quiet but I want something I can repack, I'm not certain but I think my stock 2yro old silencer could be holding me back, how would a motor react to a silencer with packing and one without any packing would one run stronger and why?