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Old 01-05-2004, 01:32 PM   #33
Scooby Specialist
Member#: 524
Join Date: Nov 1999
Location: WA
04 STi


The VF39 CAN'T make more boost than is good for the engine in the lower gears (1-4th), 5th and 6th it appears that the midrange boost can get up there, but I have no evidence for or against the safety of running 20+ PSI on a stock turbo, tune, and fuel system STi.
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