JWalk1818

#1

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?

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99 Toyota Tacoma

Phat_99CeliGT

#2

the secondone can be cut out, or u can just add a test pipe.

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Jared Harwell

snadman

#3

So...how do you gut your cat? What are the benefits of this?

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95 Toyota Celica GTDead for now --> Soon to have a 3S-GTE02 WRX --> This is for speed- Borla Exhaust- TurboXS BOV- Custom CAI02 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

Neipas09

#4

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.

jumpinccv

#5

isnt that illegal with the e-check? >>

hiflytsi

#6

HEEEEEEELLLLLLLL yeah >>

This post has been edited by hiflytsi: Mar 19, 2003 - 12:57 PM

breeze

#7

--Neipas09+Mar 18, 2003 - 10:13 PM

QUOTE (Neipas09 @ Mar 18, 2003 - 10:13 PM)

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.

don't forget about the torque you'll be losing.

west_minist

#8

Stay legal.

Get a high flow cat.

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West_MinistHydra EMS Dealer & TunerSubaru ECUFlash Tunerhttp://www.socob.bbhttp://xtremeracingtuning.comViciously Tuned, Driven Hard

claudio

#9

What are some brands you suggest for a legal high flow cat. . .any web pages I should check out?

Crash

#10

--breeze+Mar 19, 2003 - 12:00 PM

QUOTE (breeze @ Mar 19, 2003 - 12:00 PM)

don't forget about the torque you'll be losing.

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

Neipas09

#11

I'm not real sure about that but maybe http://www.howstuffworks.com will tell you.

FallenHero

#12

Just look in any import mag.

95BlueGT

#13

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

95STCelica

#14

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

No0bOne

#15

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... >>

FallenHero

#16

too tell your friends it gave you 20whp. lol

maikl

#17

--No0bOne+Mar 22, 2003 - 1:18 PM

QUOTE (No0bOne @ Mar 22, 2003 - 1:18 PM)

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... >>

i thing he's got a point.......

mywhite94celicagt

#18

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.

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94 celica GT90 Civic Si

Drocay

#19

So do you need both or is one enough to pass inspection.

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All I have in this world is my Balls and my Word and I'm not breaking em for no one,- Tony MontanaTeam 6gc 2005