How much HP am i missing here ?

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Mar 18, 2006 | 04:31 PM

MKS

Thread Starter

Racer

Joined: Mar 2006

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How much HP am i missing here ?

by getting the kooks with catted x-pipe instead of the catless x-pipe?Thanks

Mar 18, 2006 | 05:40 PM

Big Ron 77

Burning Brakes

Joined: Apr 2005

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From: Dallas TX

Quote:

Originally Posted by MKS

by getting the kooks with catted x-pipe instead of the catless x-pipe?Thanks

I was told by several tuners, as well as a very popular header manufacturer (LG), that it's less than 5. Now I'm sure that's relative to what you are doing to the engine, and if you add more cubes, the restriction will hurt you more. Stock displacement, probably not a big deal, as they noted, and you shouldn't have to worry about passing emissions.

Mar 18, 2006 | 05:43 PM

MKS

Thread Starter

Racer

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Quote:

Originally Posted by Big Ron 77

thanks

5hp isnt much and emissions is no problem here im just worried about the it being loud

Mar 18, 2006 | 06:09 PM

Big Ron 77

Burning Brakes

Joined: Apr 2005

Posts: 1,115

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From: Dallas TX

Quote:

Originally Posted by MKS

thanks

5hp isnt much and emissions is no problem here im just worried about the it being loud

No cats = very loud for sure, of course depending on your exhaust choice! The HP issue is really not an issue though. If it's loud you're worried about, I'd stick with the cats to be a little more safe.

Mar 19, 2006 | 09:44 AM

MKS

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Racer

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and what about the HP im missing?

Mar 19, 2006 | 12:19 PM

NeedaC6

Racer

Joined: Sep 2004

Posts: 359

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From: Sachse TX

if you have the stock exhaust and no cats, it's barely louder. People think my car is stock sounding.

Anyway, I would say about 5 rwhp difference too.

Mar 19, 2006 | 12:19 PM

glennhl

Le Mans Master

Joined: Feb 2006

Posts: 5,762

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From: Chandler Arizona

Quote:

Originally Posted by MKS

and what about the HP im missing?

What did your HP look like, I'll look around here to see if I can find it!

But seriously, the high flow Cats are straight through with a matrix you can see through. Take a look at this article:

http://www.vetteweb.com/tech/0501vet_lgpipes/

They gained less than a horsepower by taking the cats out. So it comes down to the following:

1) Leaving the cats out saves you $300.
2) Leaving the cats out causes a louder exhaust and a lot of rasp (sounds like a garbage truck)
3) Power wise it's not worth hardly anything
4) Leaving the cats in is good for emmisions and the quality of the air we all breathe.

So spend the $300 and put the cats in, it's worth it for a smoother sound and cleaner air.

Thanks,
Glenn

Mar 19, 2006 | 01:05 PM

JFTaylor

Race Director

Joined: Oct 2004

Posts: 10,516

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From: Virginia Bch VA

Cruise-In VI Veteran

Cruise-In VII Veteran

St. Jude Donor '06

Quote:

Originally Posted by glennhl

.....
1) Leaving the cats out saves you $300.
2) Leaving the cats out causes a louder exhaust and a lot of rasp (sounds like a garbage truck)
3) Power wise it's not worth hardly anything
4) Leaving the cats in is good for emmisions and the quality of the air we all breathe.
So spend the $300 and put the cats in, it's worth it for a smoother sound and cleaner air.
Thanks,
Glenn

+5-7 RWHP - Louder - $300 less