I recently installed a Kiwi Bluetooth device into the ODB-2 connector of my Triumph Tiger. This was slightly complicated by Triumph only providing a ground on Pin 4 and the Kiwi using Pin 5 for ground. The ODB-2 standard uses pin 4 for chassis ground and pin 5 for signal ground. A simple bridge on the Kiwi connector joining pin 4 to pin 5 resolved this and the unit powered up.

Connecting the Kiwi to my Droid X was simple. Following the normal procedures for pairing a device will result in a status of "Paired but not connected". Start the Torque software on your Droid. The device will then connect via Bluetooth and you will be able to access the data from the ODB-2 port.

The process of configuring a profile for your bike, car etc is simple. It uses the type of vehicle, engine size, vehicle weight etc to supply information like HP. The display is highly customizable.
Logs of the data can be saved and sent in CSV (comma separated), or Google Earth (KLM).

There is also the option to stream the same telemetry live to the Torque Developer's website and access the data through your account that corresponds to your Torque registration ID. I have not tried this yet but it seems like an amazing feature.

Of course you can access your ODB-2 diagnostic codes and many other features that I have not had the time to explore.
Below are links to the hardware and software sites and an example of some of the data the can be recorded in the logs. Be aware that some manufactures do not include sensors on the vehicles for all the data available to ODB-2.

http://www.plxkiwi.com/kiwibluetooth/hardware

http://torque-bhp.com/


GPS Time
Device Time
Longitude Latitude
GPS Speed (Meters/second)
Horizontal Dilution of Precision
Altitude
Bearing
G(x) G(y) G(z) G(calibrated)
Speed (GPS)(mph)
Acceleration Sensor(Total)(g)
Engine Coolant Temperature(°F)
Engine RPM(rpm)
Speed (OBD)(mph)
Throttle Position(%)
Miles Per Gallon(Average)(mpg)
Trip Distance(miles)