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Joined: Mar 2004
Posts: 88
Mikael
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Mikael Mar 24, 7:19pm - #424923 

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2000 Toyota Celica GT

Joined: Mar 2004
Posts: 88
Quebec, Canada
Catalyser question

If I remove the catalyser, the power increases or decreases on a stock GTS exhaust ???

Live to ride
Joined: Apr 2004
Posts: 427
speed_celica
Senior Member
speed_celica Mar 24, 8:42pm - #424924 

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2000 Toyota Celica

Joined: Apr 2004
Posts: 427
Calgary, AB, Canada
Probably increase by 1HP... if even! Not worth doing! Only thing you gain is noise!
Joined: Dec 2004
Posts: 401
maingear
Senior Member
maingear Mar 26, 4:32am - #424925 

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2002 Toyota Celica

Joined: Dec 2004
Posts: 401
Arkansas
I like to gut them because they always get clogged! If you do a simulator box is needed to keep the ECU happy. A short search on Google will get you what you need. Avionics guys here at work have made them for years.
Joined: Nov 2003
Posts: 242
hybridcelica
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hybridcelica Mar 26, 9:27pm - #424926 
2000 silver/blue Toyota Celica
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2000 Toyota Celica

Joined: Nov 2003
Posts: 242
virgin islands
Originally Posted by maingear
I like to gut them because they always get clogged! If you do a simulator box is needed to keep the ECU happy. A short search on Google will get you what you need. Avionics guys here at work have made them for years.


the circuit that mimics a perfect o2 sensor is a must when removing the cat.

but you would actually lose hp if you just gut it.

you would have to weld in a piece of pipe that has the same diameter as the mid pipe. wink

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!
Joined: Oct 2002
Posts: 673
XxMerlinxX
Senior Member
XxMerlinxX Mar 27, 6:33pm - #424927 
2000 Silver Toyota Celica
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2000 Toyota Celica

Joined: Oct 2002
Posts: 673
Hartsville/Greenwood, SC
Originally Posted by maingear
I like to gut them because they always get clogged! If you do a simulator box is needed to keep the ECU happy. A short search on Google will get you what you need. Avionics guys here at work have made them for years.


I thought the stuff inside the cat was carcenogenic?

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