Re: How much Vacuum?
Let's take a different approach here. Describe your turbo kit. Is it blow through or suck through? Are you positive that you have the bypass valve correctly plumbed (vacuum modulation)? How does the bypass recirculation dump back in? Is it close to the turbo inlet or MAF? Tuning a turbo can be quite tricky.
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Jeff Chambers
1990 Mustang GT 10.032 Seconds / 137.5 MPH
14-time Street Warrior World Record Setter
CRT Performance
2001 Tropic Green Mustang GT - 12.181 / 113.2 MPH
2002 Ford F-250 Crew Cab 7.3l Power Stroke - 17.41@77.2
"There's nothing boring about a small block automatic shifting gears at 9400 rpm!"
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