I installed my Hypertech III and Air force one cold air intake, and I have noticed a difference of at least a mile or two better in fuel economy. Mine is set a 87 octane. Still trying to decide on which exhaust sytem to go with too.
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2003 H2 white, 22\" Bounce with 37\" Toyo open country, Airforce one cold air intake, Granatelli MAF Sensor, Helix Power tower, Hypertech III, Corsa exhaust, TV\'s everywhere and me..............
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