The ARC2-A is a front panel adjustable calibrator that is specifically designed to implement conversion from an Air Flow Meter (AFM) to Mass Air Flow (MAF) sensor. Conversion to the MAF sensor removes a major restriction on the engine resulting in higher power and efficiency. The ARC2-A provides a way to adjust the reading from the new MAF sensor so it matches the reading from the original AFM. It can also be used to optimize the fuel mixture for other engine modifications.

In addition to the calibration function, the ARC2-A implements several other critical functions. It performs elevation compensation so the fuel mixture does not go lean at higher elevations. It also filters the signal to match the response time of the original AFM. This assures smoothness along with improved throttle response. The ARC2-A is included in MAF Kits with an A suffix.