Originally Posted by JohnC
You'd be surprised how much they can be off. They have a g force meter. Sometimes it takes a little before it goes. I've seen some say the car was quicker and some say slower. Sometimes by several tenths to a half second. So saying a jeep runs 6.5 to 60 could be over 7. Also the guy who got 8 seconds might be 7.5.
Yeah I guess your right if it really does use an accelerometer. I just assumed it was getting a signal from a wheel speed sensor or something.