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Old Jan 7, 2009, 04:10 PM   #9
Jim in Tucson
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Join Date: Oct 2006
Location: Tucson, Arizona, USA
Posts: 1,023

Drives: '03 EVO VIII, '04 Prius

Quote:
Originally Posted by JohnBradley View Post
My suggestion would be more boost down low, ...to give you the big initial spike... To me, 30-31psi seems to be the sweet spot for me, ...
Caveats: stock block, no head studs.
Questions: (1) Is it safe to turn up the wick to 30-31 as long as the tune is knock free? (2) I thought there were only minimal gains beyond 28 psi on the IX turbo; is that not the case?

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