Originally Posted by Usikan2237
If you cut ur CATS off does it get raspy or no? And If you want to buy new high performance CATS where can u? Is flow 40better or flow 40 delta better when is deeper?
Offroad piped are ones that have no cats, you can buy high flow cats in American muscle.
And the flowmaster original 40s are a lil louder and deeper then the deltas. I have the original 40s and I love them. I will soon be putting an Mac pro chamber on as well