I don't doubt that. I'm only going on what I have read. On the "G" forums there posting +8 to +12 hp gains. Just like the Stillens, I have read different results, improper dyno runs, increased timing, no bumpers installed during dyno runs. Let's keep in mind that this is a different engine than the 350Z had, so who know's what the gain is. I will say this, they are well made and look great. I hope to have some time soon to install them.
Last edited by tommyguns; 06-16-2009 at 07:53 PM.
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