Thinking about gutting my cats...
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From: wentzville, MO
Thinking about gutting my cats... My stalled, Boltons, 224 cam car is having a hard time performing at what I think is it's potential (best run of 13.0 @ 108).
A tuner I met recommended I gut my cats. They're hi-flows, not sure on brand.
The car came with the exhaust on it when I bought it 5 years ago. Car had 80k on it now has 130k.
Would you guys gut them?
A tuner I met recommended I gut my cats. They're hi-flows, not sure on brand.
The car came with the exhaust on it when I bought it 5 years ago. Car had 80k on it now has 130k.
Would you guys gut them?
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From: wentzville, MO
Out here technically you have to have cats. I've never heard of someone getting busted for not having them tho.
The way they do emmisions is basically they plug into your obd port and if there are no stored codes or lights you're fine. They got rid of the sniffer test years ago for liability reasons.
The way they do emmisions is basically they plug into your obd port and if there are no stored codes or lights you're fine. They got rid of the sniffer test years ago for liability reasons.
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From: wentzville, MO
He's thinking that my cats could be clogged that's why he recommended it. Believe me, I want the real cause of the problem too!
I'm all for no cats, but it's just plain stupid to gut them. Don't go to your tuner if he said that, obviously he can't tune since your only trapping 108 with a similar cam to my own anyways. I would search as said before for the actual problem, I doubt aftermarket hi flow cats are the issue.
You can get a pretty penny for cats on here, might as well sell them before you waste them, then get either a ORX or ORY, or just get fake cats in place of them if you want to pass visual inspection.
You can get a pretty penny for cats on here, might as well sell them before you waste them, then get either a ORX or ORY, or just get fake cats in place of them if you want to pass visual inspection.
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From: wentzville, MO
I'm all for no cats, but it's just plain stupid to gut them. Don't go to your tuner if he said that, obviously he can't tune since your only trapping 108 with a similar cam to my own anyways. I would search as said before for the actual problem, I doubt aftermarket hi flow cats are the issue.
You can get a pretty penny for cats on here, might as well sell them before you waste them, then get either a ORX or ORY, or just get fake cats in place of them if you want to pass visual inspection.
You can get a pretty penny for cats on here, might as well sell them before you waste them, then get either a ORX or ORY, or just get fake cats in place of them if you want to pass visual inspection.
My exhaust is Mac mid lengths with slp magnamouth ct back. Will any ORY or orx work?
This is a different tuner than the one who wrote the tune for my car. I met him at the track and recommended I do that and then he'd try tuning my car.
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I'm sure it's been beat to death, but which I do better with? ORX or ORY?
My exhaust is Mac mid lengths with slp magnamouth ct back. Will any ORY or orx work?
This is a different tuner than the one who wrote the tune for my car. I met him at the track and recommended I do that and then he'd try tuning my car.
My exhaust is Mac mid lengths with slp magnamouth ct back. Will any ORY or orx work?
This is a different tuner than the one who wrote the tune for my car. I met him at the track and recommended I do that and then he'd try tuning my car.
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Unless the cats are really clogged (which I doubt they are) you wont even notice a difference. Good high flow cats will only take away 3-4hp over no cats and will not even make it easier to tune. But if you wanna do it don't gut just replace with straight pipe.
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From: wentzville, MO
What's the best way to determine if my cats are clogged? It seems like my car has plenty of midrange but starts to lose steam around 5500. I did a fuel filter too
Your cats arent clogged. I wouldnt even consider it if they were aftermarket. I did choose to sell my cats though and put pipe in place. Here we don't have emission testing at all. I like the sound better. Pretty much all its good for. You need to have your tune looked at.
TECH Resident
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From: NJ
if you suspect your cats are clogged, simply disconnect them. but to be honest, is they WERE clogged, you'd have not run a 13 second 1/4. nor would you get much over about 20mph.
i'f they are clogged, then you STILL need to find the problem. they don't clog by themselves. something had to have caused them to clog. usually an overly rich mixture can/will overheat them, and melt the catalyst.
i know i sound like i'm being a wise ***, and i'm not intending anything i'm typing that way.
TECH Resident
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From: NJ
i'm glad to see someone else post this.
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From: NJ
this stuff all matters.
TECH Resident
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From: NJ
i'd also look into what others have suggested.....get your tune checked. i would also listen to what the one guy said......get away from the tuner that recommended you to gut your cats. possibly someone here could recommend a good tuner for your car.
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From: wentzville, MO
Yes, the duration is at .050. I'm gonna use my cousins efilive account to log some data this weekend and see if there's something obvious like trans slip.
I've spoke to a couple tuners already. They all want me to install an o2 bung for their wideband before they'll look at it.
I've spoke to a couple tuners already. They all want me to install an o2 bung for their wideband before they'll look at it.
id check into some LTs but thats just me.
if your cats were clogged it would run poorly. when mine clogged my car would barely move. a previous clueless tuner is why they went bad. they rarely go bad for no reason.
i gained a little from gutting them but that was after a retune. they were also high flows.
if your cats were clogged it would run poorly. when mine clogged my car would barely move. a previous clueless tuner is why they went bad. they rarely go bad for no reason.
i gained a little from gutting them but that was after a retune. they were also high flows.
On The Tree
Joined: Jan 2011
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From: Middle of Nowhere, IL
I lived in MO for awhile in Saint Louis and if I remember correctly it is just a visual inspection on the exhaust. So if it looks like you have your muffler and cats without any leaks in the pipes you should be good.
Staging Lane
Joined: Nov 2010
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From: Texas
I think your problem is your heads. Unless your gas mileage is suffering and your car runs like crap it isn't your cats. I dont know about any one else but why such a big injector?? Your need air AND fuel. Also cams don't do much without a good set of heads to go with it,and the ls6 intake should be fine. I'd look at some tsp stage 2 heads with that cam. I think you need more AIR!