Did my first run w/ the G-Tech tonight. I thought I'd be in the low 9's or upper 8's since I'm pretty heavy (4x4, crew cab, long bed, dually, LT trim) and I'm running 235/85's.

I was very pleased with my 8.40 pass! The only power mod at the moment is the K&N AirCharger (I returned the BD XTreme Airbox due to fitment issues).

Details:
Fuel Amoco 47 Cetane
Temp 57 degrees
Altitude 800 ft
Fuel level 7/8 (almost full)
milage 1640 miles

I did power brake before launching. I did three runs (others were 8.53 and 8.48). I think the engine was just getting warmed up by my third pass! There was no problems with wheel spin, in fact I have not been able to spin the wheels at all unless I'm doing donuts.

I can't wait until I bolt on a 4" exhaust and figure out what the best PCM upgrade will be once the numbers come in for the Power Loader and other PCM programmers now coming out!

I think this big 'ole truck will be in the 6's before its all over!