Chris,

cannot wait to see what times you can pull out of your car. It will be a very interesting day.

Had a few runs on AP-22 Race technology and got a best of 14.5 @ 161km power figures it gave was 211kw has anyone else tried it? 0-100 was 6.4 sec with traction ON .

Heres an article of accuracy of a few meters from auto speed

Meters compared

The meter is worth around $370 and is meant to be very accurate. It is very important  to estimate the car weight as accurate as possible,  a very straight road is also required to get a accurate reading. at the end of the day it will give you an idea especially if your thinking about tweaking.

You only need to enter weight for power reading, not acceleration times, and you should always test on same piece of road to keep things consistent.

I don't think it matters either if the weight isn't correct, as long as you enter the same weight each time and have roughly the same amount of fuel, same persons in car etc. It's all comparative, these things are best used to test modifications and as such it doesn't matter if the gtech says you do a 14.6 quarter or whatever, you do a mod (eg exhaust), test again, and see whether the time has improved.

I've got one and think they're pretty darn accurate, and a great tool for measuring whether modifcations work. I did 8 runs one night testing modified air boxes/intakes on my ex-VS, until I found the solution that worked best. Certain air box mods slowed the car by over 1 second to 100kph but my home made cold air to the bumper improved best time by 0.2 sec. Now without the gtech I wouldn't have know that.

Anyone looking for one of these let me know a mate has one for sale $250.00 in Melb.

http://www.gtechpro.com/gtechpro.html

MPH Version.