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Old 03-20-2009, 05:43 PM   #1
warneej
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Basic Bolt ons: Exhaust Headers/Flex Pipes

In this section I will go into detail describing the kinds and brands of exhaust headers and flexpipes.

When it comes time to choose an aftermarket header for your car you have a few things to consider. Mainly you want to decide if you are going to stay emissions legal. If you are going to stay emissions legal then don't install a header. Due to the combination Catalytic Converter/Exhaust Manifold, or Mani-Cat, you are unable (technicalities aside) to pass emissions with an aftermarket header installed. If meeting emissions requirements isn’t necessary then a race header is one of the best bolt-ons for the Duratec engine.

Here are some of the headers you are likely to see on the market.

FocusSport
OBX
Cosworth (discontinued)
F2 (discontinued)
Weapon-R

PROS
For the money, if you plan to make serious NA power a header is absolutely necessary. Also they cannot be beaten when it comes to price. Average headers go for between $325 - 375

CONS
Installing a header requires removal of the catalytic converter. Many folks cannot remove their cat for emissions reasons. This makes a header impossible to use. Also, noise is drastically increased with the installation of a header.

All of the headers listed come with the Flex Pipe included (except the FocusSport which is available seperately). Keep in mind there are different flex pipes for ATX and MTX so be sure to select the proper piece!


Comments, discussion, and corrections welcome!


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Last edited by warneej; 09-27-2010 at 11:16 PM.
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