No Cats

[Kyle Keller]

Has anybody taken off all the cats on the exhaust and run straight pipes from the headers --> muffler --> tip? I was looking under the ST today and i saw what looked like 2 smaller cats and 1 bigger one and i was just wondering if anyone was ever done this. I live in GA, would it make me fail emissions?

 

[Dingo]

Yes. You'd fail.

Welcome to GA.

 

[Kyle Keller]

How often do you have to get checked out Dingo?

 

[Dingo]

Every year. (unless it's pretty much brand new.)

 

[Kyle Keller]

well do you think they would notice if i took off the 2 smaller cats? and just left the bigger one on?

 

[Jon Richmiller]

You should have 2 pre-cats and 2 as you're naming it, bigger cats. I've heard that people have passed inspection since they still had the 2 regular cats and passed. But this varies a lot state to state.

 

[Johnny O]

You'd fail. The two smaller cats are called pre-cats, they work until the larger one warms up. (Well, they work all the time but you get what I mean.) This is why older cars using older emissions tests with the sniffer wouldn't pass until warmed up.

I've been told that if you use the Random Tech Y-pipe which eliminates the pre-cats, it will still pass.

I have to get tested every year in my county in PA. Some counties here do not have to be tested because as we know, dirty air stops at the county line.