Roger,

I bought my first G-Tech back in 2000 when I was turning up the wick on a 2000 Ford F-350 4X4 crew cab dually diesel. My seat of the pants could not feel a 10 hp increase in a 8000 lb truck but the G-Tech could. Most every automotive magazine uses them to generate the numbers they publish. Why do you feel this precision tool is a gizmo? For engine, exhaust tuning and chassis set up, it is indispensable. With as many variables as there are in engine building, tuning, and chassis set up, how do you do it? Do you have a dyno in your garage?