This is done using the ALDLDroid app available on Google Play. In either mode, the data can be monitored and recorded using an android device connected via wireless/Bluetooth to the unit.
This data can be retrieved afterwards until the engine is shut off, or another full throttle run is made. In either mode, the Scanmaster G will store the highest knock retard and leanest Air/Fuel reading durring a full throttle run.
ALDL mode is limited by the ECM's datastream which does not include wideband AFR information.ĪLDL mode is generally used by casual tuners and daily drivers.
The Scanmaster can be installed and connected 2 different ways, either directly receiving 'ALDL' data from the cars ECM at about update every 1.5 seconds, or to a PowerLogger which reads data from the internal circuitry of the ECM and provides much more data at 8 - 18 updates per second (some data is slowed to make it readable). Some details about the Buick Scanmaster G.
