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Joined: Jan 2004
Posts: 733
Senior Member 2002 Toyota Celica
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Senior Member
2002 Toyota Celica
Joined: Jan 2004
Posts: 733 |
Will emptying out my cat make a difference in sound and performance??
To my girl Truboo
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Joined: Jan 2004
Posts: 744
Senior Member 2000 Toyota Celica
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Senior Member
2000 Toyota Celica
Joined: Jan 2004
Posts: 744 |
Might be very slightly louder, but you'll only gain like 1whp max. We already have pretty high flow cats stock.
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Joined: Jan 2004
Posts: 733
Senior Member 2002 Toyota Celica
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Senior Member
2002 Toyota Celica
Joined: Jan 2004
Posts: 733 |
To my girl Truboo
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Joined: Nov 2003
Posts: 453
Senior Member 2000 Toyota Celica
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Senior Member
2000 Toyota Celica
Joined: Nov 2003
Posts: 453 |
you can beat the shit out of it and it'll come out when you drive or cut it off and take a screw driver and chisel that stuff out. Be creative
The 2ZZ god
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Joined: Aug 2003
Posts: 1,249
Specialist 2000 Toyota Celica GT
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Specialist
2000 Toyota Celica GT
Joined: Aug 2003
Posts: 1,249 |
And then you will get cancer because all of the stuff that gets caught in it is carcinogenic.
Leave it alone.
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Joined: Jul 2004
Posts: 2,014 Likes: 1
Specialist
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Specialist
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Don't gut your cat, its worth too much money. Just replace it with a cheater pipe. I did that on almost all my V8's & it made a huge difference.
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Joined: Sep 2004
Posts: 411
Senior Member 2000 Toyota Celica GTS
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Senior Member
2000 Toyota Celica GTS
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i was thinking about getting rid of my cat...but if its only 1 hp...then too much work and $$$ for a little improvement
GATOR HATOR! GO FSU NOLES!!!
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Joined: Aug 2003
Posts: 1,249
Specialist 2000 Toyota Celica GT
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Specialist
2000 Toyota Celica GT
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Don't gut your cat, its worth too much money. Just replace it with a cheater pipe. I did that on almost all my V8's & it made a huge difference. V8s suck a lot more air and therefore have a lot more exhaust than your Celica motor.
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Joined: Jul 2004
Posts: 2,014 Likes: 1
Specialist
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Specialist
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Don't gut your cat, its worth too much money. Just replace it with a cheater pipe. I did that on almost all my V8's & it made a huge difference. V8s suck a lot more air and therefore have a lot more exhaust than your Celica motor. True, but why is everyone doing CAI, headers, cat back systems, trd exhaust? I have been told by a couple of experts that the catalytic converter is by far the worst bottleneck in the system. But yah, I agree, the size of the stock pipes & intake in a Celi would be good for a motor twice the size. Stock highflow.
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Specialist 2000 Toyota Celica
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Specialist 2000 Toyota Celica GT
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Catalytic converter is this thing that all of your exhaust flow goes through. It takes most of the air polluting chemicals out of the exhaust before they get spewed into the air. It can be an airflow bottleneck on some cars (tubo cars and V8s in particular) and removing it can give a performance boost for those cars. Not the celica though.
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Joined: Jul 2004
Posts: 2,014 Likes: 1
Specialist
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Specialist
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A cat doesn't take polluting chemicals out of the exhaust. It uses platinum as a catalyst to convert carbon monoxide (deadly) to carbon dioxide (harmless).
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Joined: Jun 2004
Posts: 277
Member 2004 Toyota Celica GT
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Member
2004 Toyota Celica GT
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i'd leave it alone, it's good stock!
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Joined: Apr 2004
Posts: 437
Senior Member 2000 Toyota Celica
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Senior Member
2000 Toyota Celica
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If you really want to empty your cat, feed it lots of fiber and give it spoiled milk. That will really flush out his system. He'll have diarreah for the next few weeks, but thats normal. Eventually that will taper off, and there will be nothing left in him.
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Member 2002 Toyota Celica
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^^^^
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Specialist 2000 Toyota Celica GT
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2000 Toyota Celica GT
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A cat doesn't take polluting chemicals out of the exhaust. It uses platinum as a catalyst to convert carbon monoxide (deadly) to carbon dioxide (harmless). Oh come on that's the same thing.
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Joined: Jul 2004
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Specialist
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A cat doesn't take polluting chemicals out of the exhaust. It uses platinum as a catalyst to convert carbon monoxide (deadly) to carbon dioxide (harmless). Oh come on that's the same thing. No. Carbon monoxide isn't a chemical. All the chemicals including hydrocarbons that come from the engine pass through the cat & leave out the exhaust.
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Posts: 744
Senior Member 2000 Toyota Celica
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2000 Toyota Celica
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The biggest restriction is the 2.25" piping after the cat, not the cat itself. Upgrading that to 2.5" will make a much larger difference. Gutting the cat will only reduce a slight bit of restriction, which will just be reintroduced as soon as the gasses leave the cat and go into the 2.25" piping (piping is 2.5" before the cat).
TPR is coming out with a bolt on midpipe probably by the end of the year that uses a high flow CARB-approved replacement cat, a high flow resonator, and 2.5" stainless steel piping. Should be good for at least 5whp when used with an axle back that also uses 2.5" piping.
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Joined: Oct 2004
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Member 2001 Toyota Celica GT
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2001 Toyota Celica GT
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i heard if you did gut your cat you'll be hit wit a check engine light
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Senior Member 2004 Toyota Celica
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ECelica Staff 2000 Toyota Celica GT
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If you really want to empty your cat, feed it lots of fiber and give it spoiled milk. That will really flush out his system. He'll have diarreah for the next few weeks, but thats normal. Eventually that will taper off, and there will be nothing left in him. Don't forget you can also hold him up by his tail and squeeze it out of him as well.
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Posts: 1,320
Specialist 2003 Toyota Celica GT
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Specialist
2003 Toyota Celica GT
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The biggest restriction is the 2.25" piping after the cat, not the cat itself. Upgrading that to 2.5" will make a much larger difference. Gutting the cat will only reduce a slight bit of restriction, which will just be reintroduced as soon as the gasses leave the cat and go into the 2.25" piping (piping is 2.5" before the cat).
TPR is coming out with a bolt on midpipe probably by the end of the year that uses a high flow CARB-approved replacement cat, a high flow resonator, and 2.5" stainless steel piping. Should be good for at least 5whp when used with an axle back that also uses 2.5" piping. are there any exhaust, like trd, tsrm, that are already 2.5inch??
Fudge The World! Die Hard, Die Fast, Die Strong & Live Life to its Fullest
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Joined: Sep 2004
Posts: 754
Senior Member 2000 Toyota Celica GT
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Senior Member
2000 Toyota Celica GT
Joined: Sep 2004
Posts: 754 |
Cat is as high flow as you can get already. If you havent done it already go to a exhaust shop and tell them you want a straight pipe welded in place of your resonator.
"If your not the lead Dog the View never Changes"
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Sancho
2004 Toyota Celica GT
San Diego, CA
Joined: June 2004
Thank you.: Blue BatMobile for sponsorship, Isaac for installing strut bar, Easy_C for being a great friend, Sakara for entertainment, DaBigTickett for the laughs. Everyone at Ecelica! You guys rock! Random: How many emo kids does it take to screw in a lightbulb? None, they just sit in the dark and cry.
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Urgent
by SoloXKay - Mar 19, 2024 11:58am
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