Previous Thread
Next Thread
New Reply
Print Thread
Rate Thread
Catalyiser #91107 Jan 26, 3:54am Jan 26, 3:54am
Joined: Dec 2003
Posts: 18
Malta
2000 White Toyota Celica
Cableguy OP
Member
2000 Toyota Celica
Cableguy OP
2000 White Toyota Celica
Member
2000 Toyota Celica

Joined: Dec 2003
Posts: 18
Malta
Catalyiser
Hello dudes.

Just wished to ask if the removal of the catalyser for Celica GTS will help exhaust flow or not. I heard a lot that celicas need back pressure on the exhausr system and thus removing the cat will not help performace. IS this true?

If i go for a Cold Air Intake shall i choose TRD(Injen) or AEM? Do they perform the same or one is better than other.

I would like to know if the TRD Muffler is a good exhause replacement choice? If i have the TRD body kit shall i go for the extended lenght?

Thanks a lot for the help

Cable smile
GTS LOVER

Re: Catalyiser [Re: Cableguy] #91108 Jan 26, 8:03am Jan 26, 8:03am
Joined: Aug 2003
Posts: 2,269
Seattle, WA
NorwayGT
Specialist
2004 Dodge SRT4
NorwayGT
Specialist
2004 Dodge SRT4

Joined: Aug 2003
Posts: 2,269
Seattle, WA
Injen gives better HP gains at the top of the RPM range, so if your going to race then i would get that, TRD exhaust is great, and yea, if you have the action package then you want the extended exhaust


was....5speed with i/h/e
15.41 @ 89.30mph 2.282 60'

is....04 srt4 stock
13.936 100.15mph 2.177 60'
Re: Catalyiser [Re: Cableguy] #91109 Jan 27, 12:09pm Jan 27, 12:09pm
Joined: Dec 2003
Posts: 18
Malta
2000 White Toyota Celica
Cableguy OP
Member
2000 Toyota Celica
Cableguy OP
2000 White Toyota Celica
Member
2000 Toyota Celica

Joined: Dec 2003
Posts: 18
Malta
Thanks a lot mate. Where can i find soem good info on the Injen(TRD badged) Cold Air Intake please. I cannot find some graphs of the average boost.

And is it true that the celica engine prefer lots of back pressure at the exhaust side. My friend told me to remove the catalyiser for a good cheap boost and some one else told me that if i remove it(even if i keep the lamba connected properly) i could loose power because the engine needs back pressure.

Can someone please comment on this???

Thanks

Celica 2000 GTS -- MALTA -- Europe --

Re: Catalyiser [Re: Cableguy] #91110 Jan 27, 8:45pm Jan 27, 8:45pm
Joined: Nov 2003
Posts: 242
virgin islands
2000 silver/blue Toyota Celica
hybridcelica
Member
2000 Toyota Celica
hybridcelica
2000 silver/blue Toyota Celica
Member
2000 Toyota Celica

Joined: Nov 2003
Posts: 242
virgin islands
Originally Posted by Cableguy
Thanks a lot mate. Where can i find soem good info on the Injen(TRD badged) Cold Air Intake please. I cannot find some graphs of the average boost.

And is it true that the celica engine prefer lots of back pressure at the exhaust side. My friend told me to remove the catalyiser for a good cheap boost and some one else told me that if i remove it(even if i keep the lamba connected properly) i could loose power because the engine needs back pressure.

back preasure robs horsepower.its when you remove or add stuff to the exhaust that prevents flow (rapid exhaust gas movement)thats when you lose hp and torque.
about the catalyst,if you remove it you will pick up a few hp providind you:
1: weld in the proper size pipe
2: make sure the pipe is opened at the top(down pipe goes into it)
3: the pipe being put in goes into the mid pipe.
4:weld it properly (smooth welds,with little or no restrictions on the inside of the pipe.
5:you get a device that can duplicate the signal of a perfect working catalyst (or your o2 sensor would trigger a cel with the ecu)

some of the commom mistakes people make with removing the cat is,to replace it with a cat they think is a higher flowing one than stock(the stock cat is extremely good)
and they chisel out the material and leave the empty hollow pan.looks like its in but its actually out.not good in the case of the celica,as a matter of fact no celica gt or gts from 1990 to present.(the cat is so fat that when its chisseled out and left empty the massive preasure drop across the length of the cat cause the gases to slow drastically which cause loss in performance and increase backfiring.
so,you want cheap hp.cut the cat out,but do it right. and get the AEM Intake to me they work better if you are going to go extreme on the exhaust side.

Can someone please comment on this???

Thanks

Celica 2000 GTS -- MALTA -- Europe --


HYBRID:resulting from the combination of two or more mechanically dissimilar origins!
"...... code":every man is a shadow,let him be treated as such,until proven otherwise by a show of character or code!
Re: Catalyiser [Re: Cableguy] #91111 Jan 28, 10:14am Jan 28, 10:14am
Joined: Nov 2003
Posts: 242
virgin islands
2000 silver/blue Toyota Celica
hybridcelica
Member
2000 Toyota Celica
hybridcelica
2000 silver/blue Toyota Celica
Member
2000 Toyota Celica

Joined: Nov 2003
Posts: 242
virgin islands
if you want anything clarrified i can,and will be glad to.
anything for more speed,whether its me or anybody else for that matter. thumbsup


HYBRID:resulting from the combination of two or more mechanically dissimilar origins!
"...... code":every man is a shadow,let him be treated as such,until proven otherwise by a show of character or code!
Re: Catalyiser [Re: hybridcelica] #91112 Jan 28, 10:19am Jan 28, 10:19am
Joined: Nov 2003
Posts: 242
virgin islands
2000 silver/blue Toyota Celica
hybridcelica
Member
2000 Toyota Celica
hybridcelica
2000 silver/blue Toyota Celica
Member
2000 Toyota Celica

Joined: Nov 2003
Posts: 242
virgin islands
Originally Posted by hybridcelica
Originally Posted by Cableguy
Thanks a lot mate. Where can i find soem good info on the Injen(TRD badged) Cold Air Intake please. I cannot find some graphs of the average boost.

And is it true that the celica engine prefer lots of back pressure at the exhaust side. My friend told me to remove the catalyiser for a good cheap boost and some one else told me that if i remove it(even if i keep the lamba connected properly) i could loose power because the engine needs back pressure.
(QUOTE)Celica 2000 GTS -- MALTA -- Europe --



back preasure robs horsepower.its when you remove or add stuff to the exhaust that prevents flow (rapid exhaust gas movement)thats when you lose hp and torque.
about the catalyst,if you remove it you will pick up a few hp providind you:
1: weld in the proper size pipe
2: make sure the pipe is opened at the top(down pipe goes into it)
3: the pipe being put in goes into the mid pipe.
4:weld it properly (smooth welds,with little or no restrictions on the inside of the pipe.
5:you get a device that can duplicate the signal of a perfect working catalyst (or your o2 sensor would trigger a cel with the ecu)

some of the commom mistakes people make with removing the cat is,to replace it with a cat they think is a higher flowing one than stock(the stock cat is extremely good)
and they chisel out the material and leave the empty hollow pan.looks like its in but its actually out.not good in the case of the celica,as a matter of fact no celica gt or gts from 1990 to present.(the cat is so fat that when its chisseled out and left empty the massive preasure drop across the length of the cat cause the gases to slow drastically which cause loss in performance and increase backfiring.
so,you want cheap hp.cut the cat out,but do it right. and get the AEM Intake to me they work better if you are going to go extreme on the exhaust side.



HYBRID:resulting from the combination of two or more mechanically dissimilar origins!
"...... code":every man is a shadow,let him be treated as such,until proven otherwise by a show of character or code!
Join the conversation - Register Now or Log In to add your comment


Moderated by  isaac 

Member Spotlight
WaWaWAGTS
WaWaWAGTS
2000 Toyota Celica
Southern California

Posts: 93
Joined: September 2004
Show All Member Profiles 
Recent Topics
APR strut bar brace for 2000 GTS
by TweakMaster. 10/15/2017 8:02 PM
Help with vacuum hose
by Chaos. 10/15/2017 6:07 PM
My 2000 GTS
by TweakMaster. 10/14/2017 6:29 PM
Replaced bad MAF. Now getting p0300/p1300 CEL codes. HELP!
by Bblee1989. 10/14/2017 4:34 PM
What kind of rim is this?
by mariahjordan. 10/10/2017 8:05 PM
Changed Headlight but so Dimm
by smsih. 10/10/2017 2:55 PM
Anyone know this remote unlock key? trying to ID it!
by kieronboz. 10/04/2017 2:36 AM
will C-one lip fit on TRD front bumper
by Mik3l. 09/30/2017 3:28 PM
Customize Your Toyota Celica Privacy Policy · About · Contact
Privacy Policy · About · Contact
CelicaHobby.com is an independent Toyota Celica enthusiast website. CelicaHobby.com is not sponsored by or affiliated with Toyota Motor Sales, USA, Inc. in any way. The Toyota and Celica names and logos are trademarks owned by Toyota Motor Sales, USA, Inc.
© CelicaHobby.com, 2001-2017
Powered by UBB.threads™ PHP Forum Software 7.6.1
(Snapshot build 20171017)