should I?

Quick Question. I have a 98 trans am with flowmasters,4:10 rear end, shift kit and K&N air filter.....Should i gutt my cats? or just take them off? I also heard if i gutt my cats/remove them i will get poping. true?

I run a flowmaster cat-back with a gutted cat. It pops during shifting when it gets real hot, like when sitting in traffic in a Miami summer. But in normal driving, it does not do it. I'm not sure if that is typical though. Flowmaster has different systems, mine is the American Thunder series, which is louder than some.

I run a flowmaster cat-back with a gutted cat. It pops during shifting when it gets real hot, like when sitting in traffic in a Miami summer. But in normal driving, it does not do it. I'm not sure if that is typical though. Flowmaster has different systems, mine is the American Thunder series, which is louder than some..


I dont have the cat-back, i just got the muffler and tips. when you gutted your cats did u notice any difference in sound and hp? Mines also i automatic:(.

Also when it pops does it sound bad or is just a lil back firing?