BRUCE BOWLING AND AL GRIPPO

If you select one of the MAF options, you must input a MAF sensor calibration curve (or use the default Ford curve). This is similar to the coolant sensor curve, in that both are non-linear and can not be handled as a simple scale and offset. The best way to obtain such a curve is by measuring the air flow through a flow bench. In doing this it is vital that the entire air duct be included in the measurement. If this is not feasible, then a shorter correction table is provided as a tuning input. This table consists of MAFFlow vs % correction arrays, where as usual 100% means no correction... To assist in the calibration and use of Mass Air Flow sensors, an analysis program has been developed to aid in the characterization of MAF transfer curves... When the MAF-only option is selected with your MicroSquirt® EFI controller, the sensor would normally be wired to the MAP pin. If, however, the combined MAF/ MAP option is selected, then MAF MUST be connected to the Barometric/second EGO..