The PSC1-008 is a laptop programmable calibrator that is specifically designed to work with late model GM 0-10 kHz Mass Air Flow (MAF) sensors. By modifying the reading of the MAF sensor signal, the PSC1-008 can be used to adjust the fuel mixture over the entire load range of an engine. It can also be used to optimize the fuel mixture for other engine modifications. It is programmed with the Split Second R4 engine management software. This unit can be special ordered with the data acquisition option.