[4jacks]

NO WAY !!! Gutting your Cat will give a LOT more performance gains and get you MUCH better Gas milage. The ONE and only thing your Cat does is clean up the air. Is does nothing but hinder your cars performance..

there's no way i'm going be able to find any Dyno's to prove HP gains, but you will definatly get a noticable increase. I'm gutting my cat, I just have to get an extra to swap if I ever need to pass emissions.