 Gutting CAT, Guttin CAT |
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 Mar 18, 2003 - 3:12 PM
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 Enthusiast  Joined Aug 30, '02 From North Carolina Currently Offline Reputation: 0 (0%)  |
Ok I have gutted the regualr CAT but, I was informed that there is another one up next to the flex pipe. My ? is has anyone did this and how hard was it to do and was it worth it?
-------------------- 99 Toyota Tacoma
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Mar 18, 2003 - 4:52 PM
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 Enthusiast Joined Aug 30, '02 From Ohio Currently Offline Reputation: 0 (0%) |
the secondone can be cut out, or u can just add a test pipe.
-------------------- Jared Harwell
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Mar 18, 2003 - 11:53 PM
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 Enthusiast Joined Oct 1, '02 From Minnesota, USA Currently Offline Reputation: 0 (0%) |
So...how do you gut your cat? What are the benefits of this?
-------------------- 95 Toyota Celica GT
Dead for now --> Soon to have a 3S-GTE 02 WRX --> This is for speed - Borla Exhaust - TurboXS BOV - Custom CAI 02 Civic EX - MB Quart Reference 5.25" Components - Rockford MTX 8" Subs in the doors - Alpine Type S Rear Fills - 2x Alpine SWR-1042D Subs in a custom fiberglass box - Alpine F345 Amp for the front doors - Alpine M605 on each Type R - Phoenix Gold wiring - Alpine CDA-9855 Head Unit - Alpine Amp link - 2x Rockford Fosgate 1 Farad Caps - The best Viper 791 alarm install ever |
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Mar 19, 2003 - 12:13 AM
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 Enthusiast Joined Sep 5, '02 From Phoenix, AZ Currently Offline Reputation: 0 (0%) |
You basically just cut it open and rip everything out. The benefit of this is less restriction on your air flow. So you get minor HP gains.
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Mar 19, 2003 - 12:23 AM
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 Enthusiast Joined Nov 11, '02 From Ohio Currently Offline Reputation: 0 (0%) |
isnt that illegal with the e-check?
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Mar 19, 2003 - 12:57 PM
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 Enthusiast Joined Jan 9, '03 From Concord, NC Currently Offline Reputation: 0 (0%) |
HEEEEEEELLLLLLLL yeah
This post has been edited by hiflytsi: Mar 19, 2003 - 12:57 PM |
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Mar 19, 2003 - 2:00 PM
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Enthusiast Joined Mar 1, '03 Currently Offline Reputation: 0 (0%) |
don't forget about the torque you'll be losing. |
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Mar 19, 2003 - 2:11 PM
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Enthusiast Joined Oct 27, '02 From Barbados Currently Offline Reputation: 0 (0%) |
Stay legal.
Get a high flow cat. -------------------- West_Minist
Hydra EMS Dealer & Tuner Subaru ECUFlash Tuner http://www.socob.bb http://xtremeracingtuning.com Viciously Tuned, Driven Hard  |
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Mar 19, 2003 - 2:47 PM
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 Enthusiast Joined Nov 15, '02 From california Currently Offline Reputation: 0 (0%) |
What are some brands you suggest for a legal high flow cat. . .any web pages I should check out?
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Mar 20, 2003 - 12:40 AM
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Enthusiast Joined Mar 17, '03 From Chicago Currently Offline Reputation: 0 (0%) |
i know you loose the torque from the loss of back pressure, but why exactly does back pressure reduce preformance i'd think less restriction on you pistons would help, but then again maybe im just dumb |
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Mar 20, 2003 - 7:01 AM
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Enthusiast Joined Sep 5, '02 From Phoenix, AZ Currently Offline Reputation: 0 (0%) |
I'm not real sure about that but maybe http://www.howstuffworks.com will tell you.
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Mar 20, 2003 - 11:11 PM
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 Enthusiast Joined Dec 26, '02 From Alabama Currently Offline Reputation: 2 (100%) |
Just look in any import mag.
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Mar 21, 2003 - 4:47 PM
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 Enthusiast Joined Aug 30, '02 From Austin Texas Currently Offline Reputation: 0 (0%) |
i think if u did gut out ur cat, the hp u'll gain will in the higher rpms band where it will of no use, cause of the redline; unless u redline ur car to tap into the 2-3 hp u did gain.
just my thoughts |
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Mar 21, 2003 - 5:06 PM
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 Enthusiast Joined Oct 12, '02 From New Jersey Currently Offline Reputation: 0 (0%) |
my friend didn't pass inspection on the talon that he bought because the previous owner hollowed out the cat..cost him a decent amount of money to fix, i believe he just bought a hi flow..not sure tho
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Mar 22, 2003 - 4:04 PM
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 Enthusiast Joined Jan 5, '03 From Bay Area Currently Offline Reputation: 0 (0%) |
Why would you want to gut your cat on a low hp car? The gains aren't that great to begin with. Dayam dead cats be hangin in there...
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Mar 22, 2003 - 11:02 PM
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Enthusiast Joined Dec 26, '02 From Alabama Currently Offline Reputation: 2 (100%) |
too tell your friends it gave you 20whp. lol
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Mar 29, 2003 - 9:21 AM
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 Enthusiast Joined Mar 3, '03 From cyprus Currently Offline Reputation: 0 (0%) |
i thing he's got a point....... --------------------  |
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Mar 29, 2003 - 11:30 PM
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 Enthusiast Joined Oct 30, '02 From Nebraska Currently Offline Reputation: 0 (0%) |
i have one cat removed and a piece of straight pipe welded in place of it, and the other cat right after the manifold, i gutted it. I noticed a small HP gain and a major cahnge in the sound of my exhaust. It sounds alot snappyer and alot meaner. In my state we dont have inspections so i can get away with it. So in my case if i had both cats regular in my car, and no inspections, they would be both gone with a quickness. Thats just in my own opinion though.
-------------------- 94 celica GT
90 Civic Si |
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Mar 30, 2003 - 1:20 AM
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 Enthusiast Joined Oct 3, '02 From Va Team 6gc Currently Offline Reputation: 1 (100%) |
So do you need both or is one enough to pass inspection.
--------------------  All I have in this world is my Balls and my Word and I'm not breaking em for no one,- Tony Montana Team 6gc 2005 |
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