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PMAS HPX MAF Sensor Conversion
From MS4X Wiki
- Pin 1 - IAT
- Pin 2 - SIGRTN IAT
- Pin 3 - MAF OUT
- Pin 4 - MAF RTN GND
- Pin 5 - GND
- Pin 6 - VPWR +12V
Pin 3 goes to yellow wire on MS43 harness MAF connector
Pin 4 goes to an external ground on chassis
Pin 5 goes to black wire on MS43 harness MAF connector
Pin 6 goes to red wire on MS43 harness MAF connector
You can use a Bosch 3 pin EV1 Male Connector to make an adapter to plug into the stock harness. An alternative is to use an E46 Camshaft position sensor for the plug. Note the orientation that the connector goes in so you don't mix the connections.