Scanmaster "Fast Update Code" Datastream Definitions
by Bob Bailey (TurboBob)
| Standard | W | X | Y | Z | |
| Data item | (factory) |
(2.1 req'd) |
|||
| High Speed Update of O2 and Knock | No | Yes | Yes | Yes | No |
| "Compatible with OTC, Turbolink, etc." | Yes | No | No | No | Yes (except Prom ID) |
| O2 and Knock | Yes | Yes | Yes | Yes | Yes |
| AF (Mass Airflow) | Yes | Yes | Yes | Yes | Yes |
| L8 (LV8) | Yes | Yes | Yes | Yes | Yes |
| bat (Battery Voltage) | Yes | Yes | Yes | Yes | Yes |
| Int (Integrator) | Yes | Yes | Yes | Yes | Yes |
| bL (Block Learn) | Yes | Yes | Yes | Yes | Yes |
| MPH (Vehicle Speed) | Yes | Yes | Yes | Yes | Yes |
| CLt (Coolant temp) | Yes | Yes | Yes | Yes | Yes |
| AtS (Air Temp Sensor) | Yes | Yes | Yes | Yes | Yes |
| r (RPM) | Yes | Yes | Yes | Yes | Yes |
| tPS (Throttle Position Sensor) | Yes | Yes | Yes | Yes | Yes |
| IAC (Idle Air Control) | Yes | Yes | No | No | Yes |
| cc (Cross Counts) | Yes (2.1 req'd) | Yes | No | No | Yes (2.1 req'd) |
| PL (Injector Pulsewidth) | No | Yes | No | Yes | Yes |
| SP (Spark Advance) | No | Yes | No | Yes | Yes |
| MAL (Malfunction Codes) | Yes | No | No | No | Yes |
Scanmaster 2.0 is compatible with all datastreams except W.
With Scanmaster 2.1 you get CC all slow options, as well as the ability to use a W chip.
W is the only high-speed option with IAC. (2.1 required)
Datastreams are programmed into the ECM chip.
With Scanmaster 2.1, thumbwheels can be programmed with different streams in different wheel settings.