my buddy has a gtech so we put it on my car.. i spun of course, and ended up running a 13.59 at 110 mph.. the only comparison i have is my actual 1/8th mile run of 8.5@86.7 mph... i think i should be much lower than 13.6 especaially if im finishing at 110

 

you spun. and yes they are pretty accurate so long as it is mounted correctly in the car. thats very important.

 

i have heard that G- tech is not very accurate.....but thats just my thought

 

MPH sounds way off but I've ran 8.5 1/8 and it was a 13.3 1/4.

 

MPH is off on G-techs. I ran a 13.83 before headers and exhaust, running 8 times on 3 roads in both directions. all from 13.8-14.1. After headers, tune, intake, i did the same 8 runs on the same roads, same g-tech all leveled out, and ran 12.92 al from 12.9-13.1. They are consistent, and i believe they are pretty accurate. The MPH is always off for some reason.