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Tru_gts
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Tru_gts Oct 8, 2:34am - #294389 
2002 Black Toyota Celica
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Frisco
How do i empty out my cat.

Will emptying out my cat make a difference in sound and performance??

To my girl Truboo
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Blue_Bomber
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Blue_Bomber Oct 8, 3:01am - #294390 
2000 Spectra Blue Mica Toyota Celica
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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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Tru_gts
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Tru_gts Oct 8, 3:03am - #294391 
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Frisco
thanks

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Jtultra
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Jtultra Oct 8, 3:05am - #294392 

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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

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silver
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silver Oct 8, 3:32am - #294393 
2000 Silver Toyota Celica GT
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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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Haulin_A_Doo
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Haulin_A_Doo Oct 9, 12:45am - #294394 
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Ontario
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. thumbsup
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AzNRaCeR
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AzNRaCeR Oct 9, 1:02am - #294395 
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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

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silver
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silver Oct 9, 3:34am - #294396 
2000 Silver Toyota Celica GT
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Originally Posted by Haulin_A_Doo
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. thumbsup


V8s suck a lot more air and therefore have a lot more exhaust than your Celica motor.
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Haulin_A_Doo
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Haulin_A_Doo Oct 9, 5:37am - #294397 
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Originally Posted by silver
Originally Posted by Haulin_A_Doo
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. thumbsup


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. thumbsup
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Clos
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Clos Oct 9, 5:48am - #294398 
2000 Spectra Blue Toyota Celica
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silver
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silver Oct 9, 6:07am - #294399 
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Originally Posted by Clos
confused


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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Haulin_A_Doo
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Haulin_A_Doo Oct 9, 6:13am - #294400 
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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). thumbsup
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wannaBblueCelica
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wannaBblueCelica Oct 9, 6:15am - #294401 

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i'd leave it alone, it's good stock! thumbsup
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GTSVST
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GTSVST Oct 9, 7:22am - #294402 
2000 Red 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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unsceenTRD
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unsceenTRD Oct 9, 3:58pm - #294403 
2002 Carbon Blue Toyota Celica
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^^^^ rofl
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silver
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silver Oct 10, 3:16am - #294404 
2000 Silver Toyota Celica GT
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Originally Posted by Haulin_A_Doo
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). thumbsup


Oh come on that's the same thing. idunno
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Haulin_A_Doo
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Haulin_A_Doo Oct 10, 5:50am - #294405 
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Originally Posted by silver
Originally Posted by Haulin_A_Doo
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). thumbsup


Oh come on that's the same thing. idunno


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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Blue_Bomber
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Blue_Bomber Oct 10, 6:21am - #294406 
2000 Spectra Blue Mica Toyota Celica
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Freehold, NJ
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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blizb
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blizb Oct 20, 4:20pm - #294407 
2001 hyper white 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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celicajonz
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celicajonz Oct 20, 5:08pm - #294408 
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Originally Posted by Blue_Bomber
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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CID498
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CID498 Oct 20, 5:13pm - #294409 

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So.Cal
Originally Posted by GTSVST
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.



rofl

Don't forget you can also hold him up by his tail and squeeze it out of him as well.
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qbanprepster21
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qbanprepster21 Oct 20, 6:24pm - #294410 
2003 Liquid Silver Toyota Celica GT
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Virginia
Originally Posted by Blue_Bomber
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??

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FastCelicaGT22
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FastCelicaGT22 Oct 20, 7:00pm - #294411 

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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.

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