My buddy got a new g-tech for Christmas and he says it is dead accurate on his truck with what it ran the last time at the track. Evidently the old ones were known for being junk and the new ones are supposed to be pretty good. Anyways, so far it has went 14.05 and 14.07 at 101 and the best 1/8th mile is 8.86 at 83. Pretty much right where I expected it to run. With traction it would go 13.6 or 13.7. This is with 3.08 gears. It got 18.4 mpg on the last fillup.