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Look inside a quality merge collector (in this case one from our sample ARH header).  What you’ll see is a pyramid of sorts – one that controls the flow of the departing exhaust gases so that they do not re-enter the primary tube and travel backwards into the engine by way of the low-pressure area.

Headers: Scavenging Games Part III

Getting a handle on exhaust speed is extremely important (exhaust speed is the determined by the diameter and length of the primary pipe). But it’s the not only critical component in a header. Read More

Header 1 Feature

[Drag Race 101] The Scavenging Games: Headers Part I

There are tons of questions when it comes to headers:  “What’s the real story with headers? Is header “tuning” a waste of time and dollars? Are equal length headers worth the money?  Does the collector shape and size really make a difference?  Do expensive headers really give you a performance gain for your dollar?” Whoa!  […] Read More

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