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Old 10-17-2012, 01:17 PM
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snrusnak snrusnak is offline
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Join Date: Jan 2011
Location: Orlando
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Engine: 2008-20?? 287ci (4.7L) PowerTech V8 310hp 330lb/ft
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If sized appropriately, an x pipe, h pipe, and y pipe setup all are pretty close to equal in terms of hp/torque. Often times though people oversize y pipe systems and lose some low end power.

Don't listen to those who say you need back pressure for low end, or whatever else they come up with. That myth will never die. Regardless, it is false. Back pressure is ALWAYS bad for hp potential, you want free unrestricted flow. What most people don't realize is too big of a diameter exhaust pipe will slow down exhaust gas velocity, causing a loss in power.
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Breathing in and out is good enough for me.
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