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Old 11-28-2011, 12:19 AM   #155
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Just be smart and don't use cats. It's not meant for use with forced induction but if you continue to use them and something had happens don't come making a thread and wondering why.
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Old 11-28-2011, 09:52 AM   #156
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Quote:
Originally Posted by MarylandSpeed View Post
It's not something I want to be vendor vs. vendor. I am just presenting another view and trying to get people to think more. The bottom line is, I want my customers to be happy, and I would not run cats on my own supercharged car, or recommend them to customers if I thought there was an abnormal chance of them failing. With a supercharged car, the chance of everything failing is higher no doubt. However I have enough of a customer base to know that threads like this make the issue seem way bigger than it is.
Exactly, it is all part of the learning Process, People need to hear two points of View to make informed decisions.

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Old 11-28-2011, 10:08 AM   #157
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Threads like this make me scared to boost my motor.

I don't have time to read through 11 pages of responses, but is this a problem only associated with hi flow cats?

What about a magnuson TVS with stock headers and stock cats?
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Old 11-28-2011, 10:15 AM   #158
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Originally Posted by monstertodd View Post
Threads like this make me scared to boost my motor.

I don't have time to read through 11 pages of responses, but is this a problem only associated with hi flow cats?

What about a magnuson TVS with stock headers and stock cats?
We have not seen any Factory Cat Failures with an Out of the Box Supercharger systems at 5-6 PSI boost.

It is really when the Wick gets turned up that we start to see failures and Again Duty Cycle plays a Huge Roll.

Ted.
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Old 11-28-2011, 10:20 AM   #159
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Originally Posted by JANNETTYRACING View Post
We have not seen any Factory Cat Failures with an Out of the Box Supercharger systems at 5-6 PSI boost.

It is really when the Wick gets turned up that we start to see failures and Again Duty Cycle plays a Huge Roll.

Ted.
Ugh man, I wonder how long my stock cats will last on 8 pounds of boost from a single turbocharger. I wonder if I'm playing with fire so to speak, or on borrowed time.
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Old 11-28-2011, 10:32 AM   #160
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Quote:
Originally Posted by JANNETTYRACING View Post
We have not seen any Factory Cat Failures with an Out of the Box Supercharger systems at 5-6 PSI boost.

It is really when the Wick gets turned up that we start to see failures and Again Duty Cycle plays a Huge Roll.

Ted.

I see. How do you think the stock cats would handle 500 rwhp? That is my eventual goal.
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Old 11-28-2011, 10:39 AM   #161
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I see. How do you think the stock cats would handle 500 rwhp? That is my eventual goal.

500 RWHP is about what an LS3 makes with a Base supercharger kit.
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Old 11-28-2011, 11:30 AM   #162
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A bad tuner can cause problems including cats.

Parts not made for increased performance can fail.

why is this even news worthy? i know we have some dense people here but damn guys.
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Old 11-28-2011, 11:53 AM   #163
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Ted, am I going to need you to re-tune after I install the off-road pipes?
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Old 11-28-2011, 01:12 PM   #164
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The picture I posted earlier in this thread was from a Corvette making high 5XX whp after ~8000miles. Don't know if that helps or not. I am kinda of interested in what Ted is saying because he could be right on the basis that the stock cats on the camaro are huge compared to say... an accord. So Cats very well may require to be a certain size for a certain amount of CFMs of exhaust flow. But it to could just be coincidence. My only personal experience is the one i posted a picture of. My 600 hp gto didn't have them because I couldn't justify paying money for a power loss and my 600 hp camaro doesn't have them because the turbo kit removes them. My info stated is just that info, take it however you like.
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Old 11-28-2011, 01:21 PM   #165
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Ted, am I going to need you to re-tune after I install the off-road pipes?
Yes.

Ted.
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Old 11-28-2011, 01:23 PM   #166
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Originally Posted by JANNETTYRACING View Post
Yes.

Ted.
Would a person need a retune after going from high flows to off-road pipes or vice versa?

Last edited by TCAT; 11-28-2011 at 01:40 PM.
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Old 11-28-2011, 01:27 PM   #167
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Originally Posted by CyberPredator View Post
The picture I posted earlier in this thread was from a Corvette making high 5XX whp after ~8000miles. Don't know if that helps or not. I am kinda of interested in what Ted is saying because he could be right on the basis that the stock cats on the camaro are huge compared to say... an accord. So Cats very well may require to be a certain size for a certain amount of CFMs of exhaust flow. But it to could just be coincidence. My only personal experience is the one i posted a picture of. My 600 hp gto didn't have them because I couldn't justify paying money for a power loss and my 600 hp camaro doesn't have them because the turbo kit removes them. My info stated is just that info, take it however you like.
This is Not a New Problem by any stretch of the imagination, but as power levels continue to grow it will become an increasingly more frequent occurrence.

The solution is Simple, We need Cats Twice as Big as currently available to handle the Volume of Exhaust gases produced by a supercharged engine.

Maybe we could do Quad Cats side by side
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Old 11-28-2011, 01:47 PM   #168
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One thing to note is if you want to keep your cats, if you have a boost guage and know what your boost normally is if it all of a sudden the guage spikes boost way over what you normally see odds are at least on a supercharged car a cat just went bad and is creating a restriction. Take foot out of gas and drive normally till you get to a exhaust shop and get those cats checked. So you do have a way of knowing when a cat goes south, just watch your boost guage.
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