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Old 12-11-2008, 04:23 PM   #1 (permalink)
 
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Smart Header for the 451

We have just finished prototyping a header for the 451. It is designed to be a bolt on application that will work with either the stock muffler or one of our after market ones. These are race applications only and are not smog legal. Our first run has already been sold to Smart Madness so you can contact them to get your car ready to go do some autocross events. The header is a stepped header, unlike most other headers out there that uses a standard size tube to the collector, we really went all out and started with a smaller primary tube and then stepped it up a size even before the collector. This gives the exhaust the best possible performance. I have attached a picture to show what it would look like but keep in mind this is a prototype and it is not shown in ceramic coating. Speaking of ceramic coating, that is the only way they will be sold, so that we keep the temperatures down to a minimum.

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Old 12-11-2008, 04:32 PM   #2 (permalink)
 
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What is the HP increase? Any dyno runs?
What is the advantage of a stepped header?
Better low end, mid range, top end?

Last edited by jsego; 12-11-2008 at 04:37 PM.
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Old 12-11-2008, 04:53 PM   #3 (permalink)
 
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http://www.smartmadness.com/servlet/...-Header/Detail

Looks like a nice gain. Earplugs included?
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Old 12-11-2008, 05:24 PM   #4 (permalink)
 
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Looks good!
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Old 12-11-2008, 05:26 PM   #5 (permalink)
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Agreed... and the price is much more reasonable than I was expecting. A+!!!
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Old 12-11-2008, 06:13 PM   #6 (permalink)
 
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looks sweet .. im tempted come to think of it ive never had the inpections in va ever put my other vehicles on a emissions computer. anyone in Virginia ever have them check emissions?
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Old 12-11-2008, 06:44 PM   #7 (permalink)
 
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Quote:
Originally Posted by foyfarlow View Post
looks sweet .. im tempted come to think of it ive never had the inpections in va ever put my other vehicles on a emissions computer. anyone in Virginia ever have them check emissions?

Ward, I knew these would get you attention! LOL

I am wondering the same about VA.
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Old 12-11-2008, 07:17 PM   #8 (permalink)
 
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hehe yeah you know me to well
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Old 12-11-2008, 07:35 PM   #9 (permalink)
 
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Wow! A real performance part. Great job!
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Old 12-12-2008, 10:28 AM   #10 (permalink)
 
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Nice Piece!!

Do you get a check engine light when you run it due to the 2nd sensor not seeing a reduction in CO?
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