Cat removal?

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Nov 12, 2003 | 06:59 PM

jmzvet

Thread Starter

Safety Car

Joined: Sep 2002

Posts: 4,161

Likes: 12

From: San Diego CA

Cat removal?

If I remove the Cats from my 03, install some O2 sims and straight pipes, is there anything else to be concerned with ( other than smog issues )?

Nov 12, 2003 | 07:37 PM

larrysb

Race Director

Joined: Aug 2002

Posts: 16,645

Likes: 1

From: Redacted

Re: Cat removal? (jmzvet)

The smell.

Get it dyno tuned, pulling the cats will make a significant change in the dynamics at the valve overlap time. The only way to compensate is by editing the PCM and tuning it on a dyno and monitoring the mixture.

For various good and valid reasons, I'm against removing the catalyst on a highway vehicle. If you find youself overhwelmingly horny to do this for some reason, then do it properly.

Nov 13, 2003 | 10:13 AM

6Speeder

Safety Car

Joined: May 2000

Posts: 4,808

Likes: 344

From: Albuquerque NM

Re: Cat removal? (larrysb)

:iagree: When you add the cost of the parts, and the cost of proper tuning, it's a pretty poor cost/benefit ratio. Add in the grief from your neighbors because of the freekin' NOISE and the added pollution I just don't see it as worthwhile for a street driven car.
:nono:

[Modified by 6Speeder, 8:14 AM 11/13/2003]

Nov 13, 2003 | 12:03 PM

carpe dm

Le Mans Master

Joined: Oct 1999

Posts: 8,205

Likes: 40

From: Tucson AZ

Re: Cat removal? (jmzvet)

:iagree: If you are not an all out track racer, why would you do this? Very little to gain except fines and/or jail time. :conehead Obviously, most people think they won't be caught and don't care about the polution angle, but it is a felony. :yesnod:

[Modified by carpe dm, 10:05 AM 11/13/2003]