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Old 04-15-2013, 10:09 PM   #18
1989GTA
 
Drives: 1989 GTA Trans Am
Join Date: Jun 2012
Location: Cypress, California
Posts: 610
"I have a separate write up I am working on for stepped headers. It is one of those topics that has a lot of variables and is hard to write about without either going too long or doing the opposite and over simplifying."

Not much has been written regarding the stepped headers so this should be an interesting read. One thing I did see posted from a shop was that the stepped headers always seemed to perform in the upper end of the dyno horsepower range depending on what mods the car had.
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