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Catalytic converter and O2 sensors. #50677 Oct 2, 7:33pm Oct 2, 7:33pm
Joined: Aug 2003
Posts: 44
Kansas City, Missouri
guitars34 OP
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2000 Toyota Celica
guitars34 OP
Member
2000 Toyota Celica

Joined: Aug 2003
Posts: 44
Kansas City, Missouri
Catalytic converter and O2 sensors.
I was thinking of cuting off my stock cat and boring it out then welding it back on. Does anyone know if this will cause my check engine light to come on because of the sensors? And has anyone tried this

Re: Catalytic converter and O2 sensors. [Re: guitars34] #50678 Oct 2, 7:48pm Oct 2, 7:48pm
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spaztikid
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spaztikid
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heard of it before. only 1 way to find out. but there's no way you'll ever pass an emmisions test w/o the cat.

Re: Catalytic converter and O2 sensors. [Re: spaztikid] #50679 Oct 2, 8:00pm Oct 2, 8:00pm

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Do you have to take an emmisions test? Im not sure but I have never heard of anyone i know going.

Re: Catalytic converter and O2 sensors. [Re: guitars34] #50680 Oct 2, 9:16pm Oct 2, 9:16pm
Joined: Dec 2002
Posts: 1,660
Houston, TX
2001 Spec Blue Toyota Celica
Grand-Touring-Dan
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Houston, TX
well fellas. You will not pass emissions and your CEL will come on. Don't 'bore' out the cat. Just get a Hi Flo one. They are carb approved and will not set off the light. thumbsup

Re: Catalytic converter and O2 sensors. [Re: Grand-Touring-Dan] #50681 Oct 2, 10:01pm Oct 2, 10:01pm
Joined: May 2003
Posts: 5,346
LA
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spaztikid
dikitzaps
1974 Toyota Celica
spaztikid
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dikitzaps
1974 Toyota Celica

Joined: May 2003
Posts: 5,346
LA
high flo cats only add like 1 hp...our stock cats are good enough. its not woth the $$$ IMO

Re: Catalytic converter and O2 sensors. [Re: guitars34] #50682 Oct 2, 11:06pm Oct 2, 11:06pm
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California
2000 Silver Toyota Celica GT
silver
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dont mess with your cat. you could get cancer or some other disease. they are just full of bad stuff.

and dont take it off either, because then all of that bad stuff gets into the air and we all have to breathe it. yuck puke

Re: Catalytic converter and O2 sensors. [Re: silver] #50683 Oct 3, 1:07am Oct 3, 1:07am
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Australia
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2002 Toyota Celica ZR
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Originally Posted by silver
dont mess with your cat. you could get cancer or some other disease. they are just full of bad stuff.

and dont take it off either, because then all of that bad stuff gets into the air and we all have to breathe it. yuck puke


rofl rofl rofl

Re: Catalytic converter and O2 sensors. [Re: silver] #50684 Oct 3, 1:08am Oct 3, 1:08am
Joined: May 2002
Posts: 3,295
Riverside, CA
2001 Spectra Blue Mica Toyota Celica GTS
Steven
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2001 Toyota Celica GTS
Steven
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Joined: May 2002
Posts: 3,295
Riverside, CA
For reals!!!!

Originally Posted by silver
dont mess with your cat. you could get cancer or some other disease. they are just full of bad stuff.

and dont take it off either, because then all of that bad stuff gets into the air and we all have to breathe it. yuck puke

Re: Catalytic converter and O2 sensors. [Re: guitars34] #50685 Oct 3, 1:32am Oct 3, 1:32am
Joined: Dec 2002
Posts: 1,660
Houston, TX
2001 Spec Blue Toyota Celica
Grand-Touring-Dan
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2001 Toyota Celica
Grand-Touring-Dan
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2001 Toyota Celica

Joined: Dec 2002
Posts: 1,660
Houston, TX
I got a Hi Flo cat. Someone got a problem? JK guys.

For real, if you want one, then get one.

Re: Catalytic converter and O2 sensors. [Re: guitars34] #50686 Oct 3, 9:27am Oct 3, 9:27am
Joined: Nov 2002
Posts: 396
Southern California
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Southern California
i've got a test pipe, no cat and no res that I can bolt up for the track.

It makes a big difference. Dropped me an average 1 tenth in 1/8 mile times and gained 1 mph in traps, thats with it bolted up to my TRD alxe back exhaust.

unbolted/removed TRD exhaust with testpipe I've gotten close to 2.5mph gains in 1/8 mile traps!!!!!

from 77's to 79's

CEL will come on, it wont hurt anything but the enviornment, so only run it at the track!


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