I was wondering if I cut out my cats what will i need to do to keep my truck running right? I know the guy at the inspection booth so that is not an issue, but I do not want my computer to start throughing any O2 codes. My mods so far are true dual 2.5 inch magnaflow mufflers, K&N FIPK, and a hypertech tuneer.

If I cut out my cats will I to need install o2 simulators for it to run right. Is a no cat system worth it in sound and performance?