I guess I just have a very fast Suburban. After reading all the post about G-Tech I went out and bought one. After 6 passes the G-tech averaged my SVX out and 0-60 7.6 seconds and 1/4 mile 15.6. Considering that the only modification I have done to it is a K&N Filter I'd say that's pretty good. These passes were also done with a full tank of gas in extra humid weather.

One problem though. The Horsepower #'s are way off. According to the G-tech, I'm only putting out 145 Hp. That's WAAY off from 230. I wonder if anyone else has had this problem or did I do something wrong. I put a weight in that included my actual body weight and the weight of the gas. 18 gallons x 5 lbs per gallon equals 90 rounded up to 100. My weight 280 (Yes, I gotta few pounds on the frame). Vehicle weight 3560 + 100 + 300 = 3960. Isn't that the way to do it?