Does the GTech/Pro work?
In a word, yes. In all my testing with the GTech/Pro, I have found it to be very accurate. When I do a 0-60 on flat ground, the display stops exactly as the speedo needle crosses the 60mph mark. When I hit the brakes to do a 60-0, it stops just as the car does. The numbers I have gotten have matched numbers I generated using other methods. (Thankfully, radar timing was not one of them) The GTech/Pro is very sensitive, and shows even slight changes of acceleration. If you want to know what your car is doing, the GTech/Pro is an inexpensive tool which will tell you in no uncertain terms. No more seat of the pants. No more guessing. No more making up fantasy numbers to impress your friends. (ie, no more B.S.) Just hard performance numbers. It will return errant numbers if the conditions are not proper, however. In one 0-60 test, I was accelerating downhill, and the number returned was artificially high because of the downhill. To understand why, think about what it feels like when you are
