i recently removed my cat and the car doesnt sound good anymore with the flowmaster muffler....my biggest mistake was throwing the old cat away...if anyone has one layin around they dont want let me know...thanks
-John

 

did you just put a straight pipe in place of the cat? and it doesnt sound good?

I put on a gutted third gen cat and modified the fittings to that it would slide on in place of my stock cat. Acts like a resonator, I think it sounds great.

 

I have a 3400 in my car and I just use a a single 2-1/4" universal catco catalytic converter ($65 new) and a cherry bomb. Cheep, but much better sounding and lighter than my old setup with the flowmaster and a cat. It dumps before the rear driver's side tire.

 

alright got the pipe clamped down and now no more exhaust leak and it sounds good again...