You need to see what maf sensor you have, some apb are hitachi and others are bosch, m box does not have a immo from the factory anyway. What you can do is flash a m box file to any apb ecu and it will disable the immo. Provided its manual. I mention this because you can find stock allroad and a6 ecus listed up cheaper than a s4 ecu, they are all the same at the hardware level.
Well the GIAC ecu is only $100 and that’s cheaper than anything I’ve found. Can’t I recalibrate the maf map if necessary? Or I’ll just swap the maf if needed
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