My Cat is maybe clogged because its rattling inside so i was thinking of gutting it. i have no money for a new one. so would a gutted cat hurt performance versus replacing it with a straight pipe? or is it the same? and how will the sound be affected by gutting the cat vs. a striaght pipe in its place? the reason im asking is cause i want to gut my cat cause its rattling and i plan to leave the stock Walker muffler on it. so whats the differences on the cat? and how will it sound?