G Tech got me confussd

[VL Berlina 5speed]

friday night i tryed my car out using a gtech my mate managed a 16.82 but i dont get it. i can bet my mates 318is bmw in a drag and he can run 15.63, so how come my et time would b slower?
the air temp was 22 degrees last night so it was fairly cool

i dont just under stand i can beat him in a drag (start leaving him in second gear bout 2 car lengths when hit bout 100kmph)
but 1/4 time is wierd

.............BMW 318IS..........5SPD BLNA
DRAG.........loses...................win
1/4 time......15.63.................16.82

WTF i just cant figger it out

any1 got any ideas 2 wat coases this my guess is that of hes not use to my car,

[Stewart1000]

probably a problem with the g-tech or m,aybe when he tested his car he was on a slope and went faster than usual

[VL Berlina 5speed]

he said flat but i wouldnt c a factory 318is bmw doing it over 17s if it was.
would a down hill afect the g force reading coz it throughts the forces in a differant direction?

[minux]

And once again, people show their idocy doing 1/4 miles on public roads

[VL Berlina 5speed]

Originally Posted by minux

And once again, people show their idocy doing 1/4 miles on public roads

made sure no 1 was nere b4 it was atempted and it was done in the mornin 230 ish 3

[VTSSDUDE]

Yeah maybe next time make sure it is the same night with same temp, humidity and slope or straight road with no slopes.

[minux]

Originally Posted by VL Berlina 5speed

made sure no 1 was nere b4 it was atempted and it was done in the mornin 230 ish 3

Said the guy who hit the family travelling home...

[VL Berlina 5speed]

Originally Posted by minux

Said the guy who hit the family travelling home...

ok minux i now its very bad and illegal but its not helping me with my probelm