I have this but yet to try it out. Supposedly it is accurate to within 2-3hp as long as you have your values set correctly. It's a pretty slick program!
Chris
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1999 986 2.5L, Stock Exhaust (S muffler), EVO Intake, 18" Stock rims (17" during winter), IMS Upgrade, 150k+ miles and counting!
87 944S brought back to life
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