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Old 12-04-2020, 09:35 PM   #7
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Join Date: Jan 2008
Location: Portland IN

Originally Posted by JohnMc View Post
Derp, I didn't look at your question closely enough. If you're not pairing it with #4, then it really doesn't mater if you choose 2 or 3.

Proper pairing (an exhaust pulse every 360 degrees) would tie together 1 and 4, 2 and 3.

Improper pairing 1 and 2 or 3, 4 and 2 or 3 - would result in 2 pulses separated by 180 degrees, then 540 degrees of nothing.

Either one would probably work, it might be hard to casually tell the difference just driving it around. Not sure. Is this for NA or a divided scroll turbo manifold?
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