Within reason, if the section of the pipe AFTER the "reverse cone" is the correct dimension and routed properly, it will not have too adverse an effect on power.

TYGA's first GP pipe wasn't quite right. If Matt remembers, I spotted a little discolouring of one of the pipes that "appeared" to me to be a bit of a restriction. I'm not sure if the pipe diameter was increased or the radius of the bend was increased, but whatever they did it solved the gas-flow problem! It was a tiny change that made the difference though!
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Andy.
NSR-WORLD.COM

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