just wandering if when i gut out the cat convertor will the check engine light come on. if neone knows please tell me.

 

It won't.

 

Please man, don't be stupid and gut your cat! Spend the money, don't be a ricer, and get a high-flow cat... you'll get more HP with a high-flow cat than a gutted one, and you wont be doing something that's absolutely fucking horrible for the environment.

And I don't want to hear any whiplash like "All I was asking about is if the check engine light will come on", because you're still doing something that's wrong.

 

dude.. gutting out your cat has been proven to give you lower preformance.. its bad for the environment and it makes your car slower.. be good to mother nature..

 

i would like to know where you got this bit of information? dosen't sound like you know what the hell your talking about.

 

Gutting your cat creats a fuckload of turbulence in your exhaust... You know what a cat looks like on the inside, right?
A metal screen... if you gut a cat, and don't get EVERYTHING out, you A) remove torque-adding backpressure at low RPMs, and B) will create turbulence that will slow down your exhaust at high RPMs.

While, y'know, that metal screen just restricts the airflow that much... it's pretty much pointless unless you've upgraded your entire exhaust system, and a high flow cat will always give you better results, with only a test pipe getting better numbers (~1-2 hp over a high-flow cat... and should only be used in track racing conditions).

Also gutting your cat will give you a horrible ricey sound and a horrible stench. I can smell a gutted cat about 100 feet down the road...

 

so then run a straight piece of pipe through the cat. Then it looks legal from the outside.

 

I honestly think you're missing the point.

 

don't gut your fucking cat, and learn to spell.