Answer me this, why does any z28 with the one cat. system (93-94) not have as much interior sound as the two cat. system(95-97). I have the same muffler (80 series flowmaster, #42583) and my pipes run two back all the way back to the back axel. Why is the two cats. so much louder? Explain this to me, no muffler shop can.

 

I heard alot of flowmaster exhaust but dont remember 2 cats being louder than 1?? But I may be deaf.

 

it's not really louder than the 1 cat, just deeper. and the interior is way louder. remember that both of the 1 and 2 cat. systems don't have the cats anymore.

 

Ahhh oops, I still have mine due to getting checked. Did you notice a good gain by removing it??

 

I live in SC where emsions test are not used, so we don't have to do that. But removing the cat was the biggest sound change and gain i notice. Considering it's a small thing to do. I say gut your cat if you can get away with it.