IS my dad right?
06-12-03, 03:07 AM
#1
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IS my dad right?
okay so i told him today im going to gut the cats on my car. he said that would be a bad idea because by doing so i would create more heat on the engine because there wouldnt be enough pressure to push the exhaust gases all the way out. he says my pipes are to small for it to work and my engine light will probably be on all the time. hes been a serious car builder for the last 30 plus years so hes not stupid about anything. BUT THIS IS A ROTARY NOT A PISTON i told him. he says rotaries are excellent exhaust pushers because of the design. duh!
so it might work but in the end it could cause more harm then good.hes says dont do it.
is he full of **** on this or what. has any of you hurt your 13b doing this?
so it might work but in the end it could cause more harm then good.hes says dont do it.
is he full of **** on this or what. has any of you hurt your 13b doing this?
06-12-03, 03:12 AM
#3
...94% correct.
NA or TII?
NA you'd be better off leaving them unless your moderately modded.
TII then your dad's turbo illiterate. But still wouldn't suggest it unless you do a full exhaust...even a ghetto exhaust.
NA you'd be better off leaving them unless your moderately modded.
TII then your dad's turbo illiterate. But still wouldn't suggest it unless you do a full exhaust...even a ghetto exhaust.
06-12-03, 03:12 AM
#4
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guting the cats will make the engine cooler. the cats hold the heat in.
but it's really not worth it. exhausts are pretty cheap. the cat's are not. save them incase you need them later. or sell them.
but it's really not worth it. exhausts are pretty cheap. the cat's are not. save them incase you need them later. or sell them.
06-12-03, 03:19 AM
#6
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It's removing resitrction, thus going to flow freely, how could it possible create a restriction after gutting it because the pipes too small? That doesn't make sense because the cat would still have to fight that small *** pipe anyway, gutted or not. It's not going to retain heat anymore, as there's nothing inside of it to do so, just going to get noisy and fail emissions and smell 
06-12-03, 04:18 AM
#7
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thats what i thought. hes a moron. but he does have some serious cars. He never understood my import thing. but hes family so im stuck. ok im going to just get a highflow cat and a cat back. the cats are clogged anyway. thanks for the input.
hey anyone wanna sell an exhaust?
hey anyone wanna sell an exhaust?
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06-12-03, 08:55 AM
#12
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Ok.. alot of bad info above.. or only parially correct..
This is not a piston engine. it doesn't need backpressure. Gutting the cats will raise your power output a bit Also the noise level. It will no longer pass emmisions either. You will also loose a little low end torque.
Now, a full exhaust is gonna gain more and sound a little better. but if there is no cats it still isnt gonna pass emissions.
I see you are in CA, so emissions could be a problem
This is not a piston engine. it doesn't need backpressure. Gutting the cats will raise your power output a bit Also the noise level. It will no longer pass emmisions either. You will also loose a little low end torque.
Now, a full exhaust is gonna gain more and sound a little better. but if there is no cats it still isnt gonna pass emissions.
I see you are in CA, so emissions could be a problem
06-12-03, 09:21 AM
#13
Former Moderator. RIP Icemark.
yeah, how are you going to get around the inspection???
Despite my opinion that it is lame to remove the cats because you stink up the air... If you must, and think that you are going to real HP (which you won't) Don't gut the cats, replace them with mid and down pipes so you can bolt them back on for inspection.
Despite my opinion that it is lame to remove the cats because you stink up the air... If you must, and think that you are going to real HP (which you won't) Don't gut the cats, replace them with mid and down pipes so you can bolt them back on for inspection.
06-12-03, 11:29 AM
#14
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Originally posted by pinkin
thats what i thought. hes a moron. but he does have some serious cars.
thats what i thought. hes a moron. but he does have some serious cars.
06-12-03, 12:58 PM
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midpipe/downpipe time...any 2nd gen TII or NA gets a large benefit in the power dept (relative to the power they make w/ the stock stuff). don't gut them, buy bolt on stuff or make them yourself.
06-12-03, 03:11 PM
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yeah i should leave them alone. icemark is right. ill just buy the parts and keep the cats INCASE something needs to be looked at later.(sometimes the highway patrol makes you go to one of their guys for inspection)
besides , have you seen how friggen expensive they are?
besides , have you seen how friggen expensive they are?
06-12-03, 04:55 PM
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If I were you I wouldnt gut my cat if I had a vert. Just get a high flow cat, most modern high flow cats flow just as good as gutted cats and they keep you from stinking up the air you breathe.
06-13-03, 01:22 AM
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Originally posted by pinkin
quick question? how much hp can you get from a vert. full interior. and no.........V-8 swaps dont count.
quick question? how much hp can you get from a vert. full interior. and no.........V-8 swaps dont count.
06-13-03, 02:43 AM
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california is supposed to have some stricter standards for smog check, it's called smog II or something like that and it puts your car on a dyno etc.
i think only a few smog stations in the state will be licensed to perform smog II tests and these people are not supposed to be bribable
i think only a few smog stations in the state will be licensed to perform smog II tests and these people are not supposed to be bribable
06-13-03, 03:51 AM
#23
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heh, well if that's the case then the only people manning the things will be the cops...and they probably won't know what they're looking for anyway
06-13-03, 12:31 PM
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california is stricter on its laws and emission levels. the inspection in a few counties in texas require cars before like 95 to be put on a dyno for emissions testing. i passed with flying colors with a high flow cat on my 87 gxl and a road race header. the header will help you the most because it will allow the air to flow better and will keep your motor cooler. so i say get a catback, high flow cat, and a header. it will have a nice tone and still be street legal.
