Gtech performance meter which is still boxed, have got the instructions that i can send via email.

Only used a few times and not got a decent car to use it on a the moment

Measures 0-60 time
1/4 mile time and speed
Cornering G's
60 - 0 Braking distance
Horsepower

How safely and quickly can your car stop?
What is the maximum grip of your tyres?
Was the latest improvement on your car really an improvement?
What is the true horsepower of your car?

Its a precision accelerometer and no installation is required.
Mount to the windscreen and off you go.
£20 posted :thumleft: