I am using the Dash 2 display from Race Technologies. I am also using their data logger which has a G meter and GPS and just plugs into the display. The display shows me RPM with shift lights, speed, gear indicator, water temp, oil pressure, and boost. It is fully adjustable and programable for what ever inputs you want to use. The data logger willdraw a picture of the track, record my lap times, and show me G forces any where on the track I want. Just put the cursor on the track and the G force shows.
This can be a good tool for learning a track. You do a bunch of full braking stops and record your highest braking G force. Lets say you can reach 2 Gs of breaking force. Then all things being equal, you should be able to reach 2 Gs of cornering force. So knowing your maximum attainable Gs you look at your cornering Gs on your laps and this will show you where you could have done better.
