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Camaro V6 LLT Engine, Exhaust, and Bolt-Ons Bolt-Ons | Intakes | Exhaust

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Old 08-05-2013, 05:01 PM   #1
lscamaro


 
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CATS

Does anyone know how much the rear small cat flows?
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Old 08-05-2013, 06:55 PM   #2
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Take it off.
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Old 08-05-2013, 10:28 PM   #3
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Bump!
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Old 08-06-2013, 12:20 AM   #4
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just get LT headers with no cats. trust me lol
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Old 08-06-2013, 12:58 AM   #5
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Take them off and feel how restrictive they were
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Old 08-06-2013, 01:00 AM   #6
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Take them off and feel how restrictive they were
I already took off the rear ones, I'm thinking about moving the rears to the front since they seem less restrictive than the front ones
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Old 08-06-2013, 02:26 AM   #7
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I wanna say the rears have less cells in them thus would flow more than the uppers but u might throw a cel since the a/f ratio would b different but I think it would just b too much work to do all that in my opinion
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Old 08-06-2013, 02:37 AM   #8
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I don't mind about throwing a cel since I can get that tuned out or live with it until I get a tune. Only reason I ask is because I wanted to see if I could make "poor mans high flow cats". I have to buy a set of high flow cats for some headers I have but don't want to spend a bunch either. So the other day while detailing the car, I saw my rear cats. I basically have the rears sitting here in the garage and have a buddy that would weld em for me for free so I thought why not do that? But I wanted to know if it'd even be a small gain or if I should just go ahead and scrap the cats.
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Old 08-06-2013, 10:49 AM   #9
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If u got someone to weld them for free I would say go for it I think the small cat shouldn't rob u of n e horsepower and might take the rasp out of the headers worst comes to worst just straight pipe ur headers into an x pipe with mufflers
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Old 08-06-2013, 10:55 AM   #10
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If u got someone to weld them for free I would say go for it I think the small cat shouldn't rob u of n e horsepower and might take the rasp out of the headers worst comes to worst just straight pipe ur headers into an x pipe with mufflers
I'm just gonna weld them into a pipe and clamp it onto the headers. If I like the sound and feel, I'll get the pipe put in permanently, if not ill either go straight pipe or suck it up and buy the high flow cats
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Old 08-06-2013, 11:12 AM   #11
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Good way to wave some money if u do like em
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Old 08-06-2013, 01:48 PM   #12
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2 things-
1) The rear cats convert carbon monoxide to CO2, while the front cat's job is to convert the nitrogen oxides that create smog.

2) Just a heads up but no cats equals a much louder and raspier sound.
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Old 08-06-2013, 05:35 PM   #13
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2 things-
1) The rear cats convert carbon monoxide to CO2, while the front cat's job is to convert the nitrogen oxides that create smog.

2) Just a heads up but no cats equals a much louder and raspier sound.
I already have the rear cats deleted. If I put the rears in and those are the only ones I have, will it still smell like fuel? That's basically all I'm trying to avoid. If they can just do that, that'd be great.

Yea, I've heard a no cats setup and it needs an x pipe in my opinion because it rasps so much
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Old 08-06-2013, 10:51 PM   #14
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it will not really smell like fuel after a couple hundred miles. i literally dont smell it. its not like the old cars of the 90s or early 2000s
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