Single Solenoid Controller Boost control & power meter function Full color (65.000 colors) Digital display Analog display Multi-angle display function Convenient functions Optional A/F display function Sequential valve control Automatic correction of boost pressure (Initial learning Click here to view more details on this boost controller It is possible to display, record, and replay by inputting an external voltage of 0-16V up to three channels. It is possible to change the voltage scale from -999 - `9999. It is also possible to arbitrary setup the value. Therefore, it can be used to record the throttle voltage, airflow voltage, water temp and replay for reference as a setting tool. The external voltage input harness is sold separately (Part # 15053). Available in black or Silver