I have an 05 f150 4x4 5.4L, I have a roush cold air intake, gibson shorty headers and duels, but i can't find any stainless cats. I was woundering if there was a way i could fool my o2 censor so i could punch out my cats to get more power?

 

You're not going to get any "noticable" power by removing or punching out your cats. Leave them be, and leave the 4 O2 sensors intact.

 

How do you like the Roush Cold Air Intake??? ive been contemplating either getting the roush or the k&n... Thanks alot

 

If your going to hollow out your cats or replace them with hi-flows, and you have a CAI and Headers. Your probably running lean. If you don't have a tuner/programmer already I would suggest 1 with custom tunes to fix the lean issue.

Check out Gryphon, Powerhungryperformance. They can write custom tunes for your vehical and get rid of the lean issue. FYI. 04-05 and some 06's run lean with just a CAI.