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Measured gains tested from Test Pipe to HFC??
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07-18-2009, 05:19 PM
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import111
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Join Date: Feb 2009
Location: Tucson, AZ.
Posts: 622
Drives: 09 Nissan 370Z
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191
From what I have seen for the 370Z, it seems that test pipes gain a little whp but do not gain any torque at all over HFC's.
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