I just bought a nice SS back box with a decent bore tip and now it's fitted there's almost no noise change, I had to mod it slightly to fit so I can't take it back. It looks amazing but sounds stock for some reason unless you have your ear right up to the exhaust then it kind of burbles, is there ANYTHING I can do to get a bit more noise from it? I don't care what it is because I'm just really disappointed it doesn't have any more noise than stock, thanks