regular cat on jpp system

[jerold]

now that i need to smog check for registration purposes, the smog guy replaced my busted jpp cat with a stock cat (that whole jpp cat issue thing).

what does a high flow cat gain for me? is it worth swapping it back out?

also, is it my imagination, or is my car louder now with the regular cat?

7psi s/c

thanks,
jerold