not sure what the deal is there - i have been using the published numbers for weight, and then accounting for the changes i have made, to enter the weight number - perhaps the published numbers are off, as jim child says, and real weights are actually lower, which would make the g-tech readings higher
i only know that the increases of power, where i did have both g-tech and dyno runs, were extremely similar mod by mod, on both the dyno and the g-tech, indicating that the unit is accurate
i suppose the right thing to do is weigh the car, so as to have an accurate input number, and then run it again - the point of the runs for me though, was not to find a number, but show the increases - that part works regardless of the weight number - i knew what it said before - i knew what the inputs were - i repeated everything and did it all the same eaaach time, and got the increase numbers
this is the thing i have been harping on forever with people who continually try to compare dyno charts and such - it's not about the final numbers, but rather the measured gains - the stuff works, makes very real gains, and works better than the competition
good enough for me to feel good about the purchase
maybe someday i'll get the time to actually do some more runs - won't be any time soon though - just too darned busy
lol - of course, the hidden bonus may turn out to be that i actually have even more power than i thought - if i'm already getting these kinds of readings, and it's only a weight correction, i may well find out that the results are even higher - who knows?
the flywheel may well be affecting the numbers too though - the important thing is the mod by mod increase