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#424923 Mar 24, 12:19pm
Joined: Mar 2004
Posts: 88
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2000 Toyota Celica GT
Member
2000 Toyota Celica GT
Joined: Mar 2004
Posts: 88
If I remove the catalyser, the power increases or decreases on a stock GTS exhaust ???

Last edited by Mikael; Mar 24, 2005 12:21pm.

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2000 Toyota Celica
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2000 Toyota Celica
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Posts: 427
Probably increase by 1HP... if even! Not worth doing! Only thing you gain is noise!

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2002 Toyota Celica
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2002 Toyota Celica
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Posts: 400
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
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2000 Toyota Celica
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2000 Toyota Celica
Joined: Nov 2003
Posts: 242
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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


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Joined: Oct 2002
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2000 Toyota Celica
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2000 Toyota Celica
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Posts: 673
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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