[Teamsterjohn]

Have anyone tryed a new aftermarket catalytic converter when installing a duel exhaust system?

 

[white03v6]

me personally, no. i still have stock exhaust though. but people have switched to high-flow cats while doing exhaust. ill try to find a vid thats on the top of my mind right now.

edit-not the one i was thinking of but heres one:

 

[04stang123456789]

I have 2 high-flow cats on mine... I hear that it is actually good to have them with dual exhaust because it creates a little back pressure that you will need for performance... I haven't had a problem with them at all and I need to meet the regulations to get it inspected