CammedC6520

Hey guys got another question so again I'm only 17 and don't have much to spend but I have gutted cats and wondering if they are worth keeping or should save up for headers or other bolt ons what are the pros and cons of each side thanks guys

Dano523

Gutted cats do nothing but make the car smell of un-burnt fuel at every stop light.


Understand how a header collector works, How is scavenges more burn exhaust out of each header pipe before the head fires down it again, and you understand how on a LS-2 and LS-3 it gains about 25HP to 30HP with LT headers instead. As for even with headers, you run High flow cats in the system. The high flow cats will only rob you of about 3hp, and will keep the car from stinking of un-burnt fuel at every stop light instead.

Dcasole

Even with HI Flow cats you will get a little stink.... I am told it's because the cat location has been moved farther downstream from where the factory cats were and they don't heat up as well . Not sure if that's true or not but I still get a bit of a smell but nothing like the cars that are not running any cats or gutted cats

Dave

MidWestKev

I've got hi flow cats on my Lingenfelter and I can smell the fuel.

CammedC6520

Ok that makes allot of sense but I was still told you can make horse power from having gutted cats is that true and thanks

CammedC6520

Maybe that's why it's illegal to have cats in a different place other then factory in California
Thanks man

let er eat

Probably losing or breaking even...better off with a Z06 system as they can be had for cheap and can still get you 15-20 hp over stock with a good tune.

I say NA to boost

Gutted cats are worthless, ask me how I know... Go for a set of long tubes, I went with Hinson for mine and I love them, new they're $829 shipped to your door, but you could easily find some used for cheaper. I'll add the link for you below.
http://www.hinsonsupercars.com/p-861...es-silver.aspx

Dcasole

He is in California...... he will never pass the test ....

I agree that headers are the best solution but not for someone that has to pass visual emissions, for those folks the ZO6 is the best solution ......

I was a bit worried about my headers but the guy never looked ....plugged the OBD connection in and ran all the tests ....

Dcasole

I am sure it might have something to do with it but all Cats have to heat up in order to work so even factory cats are not doing anything for a few minutes I am sure ......

Dave

I say NA to boost

To be honest if I lived in that god forsaken state (no offense, just true) I would register in another state where I'm free to modify my car to my hearts content. Heres a header clip for you, this is Hinson Headers with a Billy Boat NPP cat back. https://drive.google.com/open?id=0Bz...3BqNHItV21nN3c

CammedC6520

Sounds nice man how much did those billy boat npp cost you

I say NA to boost

A LOT...

http://shop.bbexhaust.com/C6-Fusion-...-FCOR-0458.htm

Rogers 07

No. Its not true of the Corvette cats. The C6 factory cats are already very high flow and efficient designs. The only thing "Gutting them" does is increase pollution for virtualy no HP gain. As others have said, a decent set of headers, High flow cats and a mild tune will gain you up wards of 40-50 HP and still be smog legal (Except in California)

CammedC6520

Oh sh** that's way to much 2500$ damn I might just get a full 3 inch exhaust system with the npp I just want a quiet side so when I get pulled over and since I'm in Cali exhaust modifications are illegal but if I get a stock npp from a 2008 and up I will tell the officer it is factory from corvette and that the cut outs are also they just open at 3k rpm

CammedC6520

Probably true but I doubt it I don't think the ls2 are high flow at all they are also huge cats compared to the z06 which I find weird but what do you mean by a mild tune ? I thought a tune was a tune

Don-Vette

Headers with high flow cats. That's how I would roll. Hot rodding 101: #1 ...Headers (exhaust)

#2 intake/carb/injectors

#3 cam/ valvetrain

#4 ported heads

Proven steps to horsepower. Btw: any or all of the mods requires a tune.

Mike's LS3

Actually, the LS2 and LS3 cats are smaller than the Z06 cat. My guess is because the LS2 and LS3 have 2 1/2" exhaust and the Z06 has 3" exhaust. The Z06 cats are more efficient. In 2012, corvettes came with a 4 cat system which added two small cats at the mid pipe. Also, a recall for 2008-9 for the addition of the two small cats at the mid pipe was sent out. In CA, if the recall is open you cannot register the car.

Anytime you change fuel metering a tune is required for maximize performance, i.e. headers, cam, heads, fuel injectors, etc.

CammedC6520

I don't have a tune and I'm running rich is it bad for my car I'm trying to get all my mods first then a tune last thanks

Dcasole

How do you know you are running rich ?

Dave