so i picked up a g-tech pro meter by tesla. i read through all the basic info regarding the function of this thing and it seems trustworthy. but i'm still a little curious on the margin of error on this... anybody had improper or a big margin of error between runs?

 

i wanted one, but im hesitant, id like to know as well>

 

i ran a 15.2 with y and intake in 50 deg. with little humidity on the gtech, and at beach bend i ran a 15.9 with mods listed in mid-high 70 deg with a track claimed 100% humidity.

discuss......

on a side note they look badass hanging in your car, with their blue display

 

hrm...the margin of error seems like sh*t

 

well there are two schools of thought, one is that the gtech is very accurate for ets but slightly off for mph. the other is that the gtech is only good for comparing two cars on the same road under the same conditions.

as for my comparison of times, its very possible that the gtech was accurate as there was a difference of 20-30 deg and humidity difference was around 50% between the runs with the gtech and the track