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Old 08-18-2011, 01:17 AM   #30 (permalink)
Motordyne
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The XYZ HFC drops 3-4 HP relative to the XYZ resonator or XYZ straight pipe.
Normally a HFC would drop more than 3-4 HP relative to a test pipe but the XYZ HFC is so much farther away from the engine there is less pressure drop and power loss.
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