do I need a new cat

[jekyllmay]

I have supercharged (with 7th injector) my 2000 runner I am going to git the TRD heders and borla catback do I need a new cat if so what is best ????

 

[Casper]

I dont know what UTAH's emissions are but theoretically you dont need a cat as long as you could get some O2 simulators to prevent CEL/SES lights.

Also im not sure on what kind of tuning the ecu does with the 02 sensors...

so i would say to check out random technologies or car sound (made by magnaflow)