hey all. this is my first post on here but ive been reading the forums for over a year! not sure if im in the right spot. anyways, i just installed my 1 5/8 BBK LTs and OR xpipe, replacing - stock headers, gutted cat's,- still have my 2 1'2" dynomax cat back (not sure what muffler type but it's all dynomax). I have heard a lot of stangs with lt's and mine sounds weak!!!! i think it is quieter than before, and did not feel any notice in power... what could be up? thx.