M Performance Drive Analyser - iOS & Android.  Requires the M Performance Drive Anaylzer app free from the App Store.  Elation can be quantified. The Drive Analyzer comprises an OBD (on-board diagnostics) stick and a smartphone app. It facilitates the recording and analysis of numerous kinds of data relating to driving and driving dynamics, such as peak values, engine data, braking distances, GPS data, videos and more.

Features include:  TrackDrive - track and data recording including video with professional analysis tools; G-Drive - shows lateral and linear acceleration; Power Drive - shows real time engine power and torque; FuelDrive - shows fuel consumption and CO2 emission including fuel cost; CoreDrive - shows real time engine data; Test Drive - precision time measurement for acceleration, distance, elasticity and brake deceleration tests; Vehicle - vehicle information and selection; Exit and Support. 

Bought this for my car, never used, sold the car :)