anyone tried those things? just wondering how accurate they are... i saw couple of them for $39.00 on ebay

 

I have one and if used correctly they are very accurate. I have learned the tempature of the meter has a great effect on its accuracy. The meter should not be stored in a hot car or the glove box. If the meter gets too hot it loses accuracy. I have used it to measure 0-60, quarter mile, 60-0 braking and skidpad g-force. at $39.95 it is worth it for sure :wav:

 

Yes, I admit...I have one. They are somewhat accurate. I have used mine once at the track, though, and it was almost an entire second slower than what the track had.

 

Those are old ones. 94-00 model.

 

but the new ones are way too expensive, they're like $200+

 

i heard the old ones are thrown off you tire spin.

 

The G-Tech calculates by using acceleration measurments from and internal accelerometer and time. Tire spin does not throw off accuarcy.