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12A headers

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Old 04-18-14, 06:26 AM
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PA 12A headers
How long do the primaries need to be on the headers? And what is the shortest they can be to keep some low end torque.
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Old 04-18-14, 01:58 PM
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Good question. I suggest searching 'rotarygod exhaust primary tuning'. It will turn up some great reading on the topic. As Mulder said, "The truth is out there."
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