Summit has them, they go for about $130 if I remember right. It supposed to tell you g-forces and acceleration. I dont know how well they work. I do know that the manifactures use simular devices when they design cars so they can tune the chassis for the best ride quality.
The new G Tech Competition: http://www.gtechpro.com/competition.html
The old G tech unit: http://www.gtechpro.com/
It's not on their site yet but early next year they will come out with the G Tech Competition version.
It has four acceleromiters and will record cornering and acceleration without having to turn the unit sideways.
It will sense engine rpm's through the power plug.
It will show accel and cornering G's, Horsepower, torque and a acceleration curve graph all at the same time!
You can download to a lap top later and analyze the runs.
There are shift lights (LED's) that come on when you should shift, a wheel spin indicator LED that you can set to tell you when wheel spin is too great. It also works for cornering, a light comes on when you are about to wipe out!
It won't be out till spring of next year.
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