Quote:
Originally Posted by bondvagabond
I welded up a set of headers for a geo metro optimizing for this scavenging effect, one of the real engineers one here helped me calculate size and length. The runners were TINY! As in, they don't sell exhaust tubing that small. Torque and fe both increased. This custom header was essentially the opposite of porting.
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I would have liked to have seen those headers. I'm guessing they were long tube if you were trying to maximize scavenging.