I can offer my complete approval of this tune. The dyno showed an increase of 38whp and 53ftlbs wtrq on an Automatic. Those numbers were not at peak either since it wasn't possible to maintain the required rpm at peak with the automatic slush box. I can also say that even in very hot conditions it drives like a new car, much smoother up through the gears, and almost don't need the throttle at steady highway speeds. Plenty-o-boost on demand when you want it now too. The base tune on this car was complete $#!+...Pontiac should be ashamed. My city gas mileage appears to have improved by about 2mpg, and my highway mileage may be less by 1-2 mpg...I'm not sure because I was cruising faster and with the top down. Usually on a long highway run I keep the top up and speed under 65 when I'm trying to get best mileage - Now that's hard to do
Steve & Martin - You've done a good thing here...keep up the good work.
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2007 MysteriousGXPAutomatic-Loaded
MB Quart Comp 6.5's lit red w LEDs, e-Dead, Lil Chromies, 15% Tint, Red lit GXP Windrestrictor, Black'd air bag light/visors, LED lights, stubby antenna, nixed-GM chix, license plate light hole covered, 3"Magnaflow Cat-back, Dejon BOV spring, Cry02 IC water sprayer, Militec-1, K&N drop-in, MBRP charge tubes & turbo shield, PS Resv insulated, GMR Tune, Fully Zaino'd.
Linear Mode
