Quote:
Originally Posted by Blue70SS
Exactly what I've been hearing. Also above 600 RWHP seems to surface alot. Lingenfelter has also seen the same on high boost and long tubes. I believe the quote was "there isn't a cat on the market that will handle this much power". The links I posted have Kooks high flow on a few.... but I've heard of numerous vendors. It's no particular brands, and as Ted mentioned.... it's more a cat capacity issue.
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I have all LPE parts on my supercharged car including the shortblock and my cats are fine. This is likely making 750-800 at the engine. I am not buying into the cat capacity issue. If that was the case, a Shelby or ZR1 would have cats the size of trashcans underneath. Also, the high flow cats that come with Kooks are VERY high flow. As in I can look through them and make a picture out the other end. This is not a matter of them being unable to flow the amount of exhaust that is moving through the cats. If that were the case, there would be power difference between catted, and uncatted setups in terms of power, which there really is not. At the end of the day, it is really the cat tells the story of what happened to it. It is that the exhaust gas temps are too high (i.e. lean) the cat is melted. If the car is too rich, and the fuel is contaminating the cat. I have a nice poster I will take a picture of today that explains all this.
Rather than saying there is no cat that can survive 600HP, maybe we can consider that tuning a car at 600HP is where getting it right gets much harder.