Remove Cats?

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Aug 2, 2007 | 10:37 PM

ALVETTE00

Thread Starter

Drifting

Joined: Jun 2007

Posts: 1,437

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Remove Cats?

My county doesn't test for emmissions...so I was considering removing the cats...any idea what hp gains that would provide? has anyone else done this?

thanks!
-al

Aug 2, 2007 | 10:52 PM

moserbe

Race Director

Joined: Dec 2005

Posts: 11,664

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From: Wellsboro Pa

Leave them on, there are no gains in hp without them.

Aug 2, 2007 | 11:15 PM

BOTYNV1

Team Owner

Joined: Oct 2006

Posts: 65,010

Likes: 133

From: Title town, Champs live here.

St. Jude Donor '09-'10-'11-'12-'13-'14-'15-'16-'17-'18-'19

What other mods do you have???

Aug 2, 2007 | 11:18 PM

NAVY08

Race Director

Joined: Apr 2005

Posts: 11,556

Likes: 52

From: SoCal Twin Turbo, Any Questions?

St. Jude Donor '06-'07

Quote:

Originally Posted by moserbe

Leave them on, there are no gains in hp without them.

i dissagree... although i canot give a figure i know at least thoes of us with turbos gain a signifigant amount by reducing backpressure. I am also caltess and i love the sound

Aug 2, 2007 | 11:34 PM

nickolbag

Le Mans Master

Joined: Aug 2005

Posts: 5,130

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From: Winter Park FL

Back to back dynos showed 0rwhp 1rwtq gain with them gone on a mild H/C car. I know back to back dynos still dont give a definite answer to the question but it gives an idea. The change was pretty much none. If you want the extra noise take them off. If you dont leave them on. Keep in mind you may get more exhaust smell with them gone. If you have a more agressive set up them me you may see more benefit with them gone also.

Aug 2, 2007 | 11:36 PM

LO PHAT

Pro

Joined: Apr 2007

Posts: 585

Likes: 2

I'm not meaning to jump on a soapbox or sound like a tree hugger here, but why not leave them in place and do your small share for the environment? There are better ways to gain horsepower and/or eliminate backpressure....