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How do i empty out my cat. #294389 Oct 7, 7:34pm Oct 7, 7:34pm
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How do i empty out my cat.
Will emptying out my cat make a difference in sound and performance??


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Re: How do i empty out my cat. [Re: Tru_gts] #294390 Oct 7, 8:01pm Oct 7, 8:01pm
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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.

Re: How do i empty out my cat. [Re: Blue_Bomber] #294391 Oct 7, 8:03pm Oct 7, 8:03pm
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thanks


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Re: How do i empty out my cat. [Re: Tru_gts] #294392 Oct 7, 8:05pm Oct 7, 8:05pm
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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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Re: How do i empty out my cat. [Re: Jtultra] #294393 Oct 7, 8:32pm Oct 7, 8:32pm
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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.

Re: How do i empty out my cat. [Re: silver] #294394 Oct 8, 5:45pm Oct 8, 5:45pm
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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. thumbsup

Re: How do i empty out my cat. [Re: Haulin_A_Doo] #294395 Oct 8, 6:02pm Oct 8, 6:02pm
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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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Re: How do i empty out my cat. [Re: Haulin_A_Doo] #294396 Oct 8, 8:34pm Oct 8, 8:34pm
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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.

Re: How do i empty out my cat. [Re: silver] #294397 Oct 8, 10:37pm Oct 8, 10:37pm
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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

Re: How do i empty out my cat. [Re: Haulin_A_Doo] #294398 Oct 8, 10:48pm Oct 8, 10:48pm
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confused

Re: How do i empty out my cat. [Re: Clos] #294399 Oct 8, 11:07pm Oct 8, 11:07pm
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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.

Re: How do i empty out my cat. [Re: silver] #294400 Oct 8, 11:13pm Oct 8, 11:13pm
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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

Re: How do i empty out my cat. [Re: Haulin_A_Doo] #294401 Oct 8, 11:15pm Oct 8, 11:15pm
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i'd leave it alone, it's good stock! thumbsup

Re: How do i empty out my cat. [Re: wannaBblueCelica] #294402 Oct 9, 12:22am Oct 9, 12:22am
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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.

Re: How do i empty out my cat. [Re: GTSVST] #294403 Oct 9, 8:58am Oct 9, 8:58am
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^^^^ rofl

Re: How do i empty out my cat. [Re: Haulin_A_Doo] #294404 Oct 9, 8:16pm Oct 9, 8:16pm
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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

Re: How do i empty out my cat. [Re: silver] #294405 Oct 9, 10:50pm Oct 9, 10:50pm
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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.

Re: How do i empty out my cat. [Re: Haulin_A_Doo] #294406 Oct 9, 11:21pm Oct 9, 11:21pm
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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.

Re: How do i empty out my cat. [Re: Blue_Bomber] #294407 Oct 20, 9:20am Oct 20, 9:20am
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i heard if you did gut your cat you'll be hit wit a check engine light

Re: How do i empty out my cat. [Re: Blue_Bomber] #294408 Oct 20, 10:08am Oct 20, 10:08am
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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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Re: How do i empty out my cat. [Re: GTSVST] #294409 Oct 20, 10:13am Oct 20, 10:13am
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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.

Re: How do i empty out my cat. [Re: Blue_Bomber] #294410 Oct 20, 11:24am Oct 20, 11:24am
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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.


are there any exhaust, like TRD, tsrm, that are already 2.5inch??


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Re: How do i empty out my cat. [Re: qbanprepster21] #294411 Oct 20, 12:00pm Oct 20, 12:00pm
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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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