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Old 11-10-2013, 09:20 PM   #7 (permalink)
Chuck33079
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Join Date: Nov 2011
Location: Houston
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Drives: 2011 370ztt
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Default FI LTHs significantly better than HFCs?

Compared to stock, sure you'd feel a difference. Going from HFCs, I'm not so sure. You'd probably get far more out of a set of gears. The Motordyne manifold also has some nice torque gains. Both of those together would still be cheaper than the headers.

I doubt you would feel anything less than a 10whp increase unless your butt dyno is incredibly sensitive.
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