The Matco Tools Max Drive In-Vehicle Data Recorder, No. MDMAXDRIVE, is designed to help identify driving problems to solve maintenance issues quickly and easily. Users can read and record data streams of the engine to demonstrate them graphically with a user-friendly browsing interface and clear data display on a Matco Tools' Maximus scan tool. The data recorder features OBD-II live data recording. Simply connect to start data recording and unplug to stop.