The first time I was on the dyno I saw a 12 horsepower increase at the rear wheels by just playing with the fuel pressure using the adj. regulator. I don't know that I would have ever got an optimal tune using it on the street, but the dyno made it easy.
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2006 Mustang GT
1990 LX
GT-40 motor 262 horsepower, 307ft-lbs (sold but forever loved)
1998 Contour SVT
Rice Haters Club Member #244
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