....you might be interested in this little bit of kit - http://www.devtoaster.com/products/rev/index.html
Taken from their website:
"Rev is an application for the iPhone and iPod Touch that provides graphical representations of real-time vehicle data. By communicating directly with your vehicle's ECU, Rev can monitor several vehicle metrics:
Taken from their website:
"Rev is an application for the iPhone and iPod Touch that provides graphical representations of real-time vehicle data. By communicating directly with your vehicle's ECU, Rev can monitor several vehicle metrics:
- Vehicle Speed
- RPM
- Fuel Consumption
- Engine Coolant Temperature
- Fuel Pressure
- and lots more!