Subaru Impreza GC8 & RS Forum & Community: - View Single Post - DIY: ProjectLambda Stock ECU Reflash Tuning (Master Reference Thread)
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Old 11-14-2016, 01:45 PM  
Join Date: Jun 2016
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I had some difficulty finding the pinout for the 4 wire map / iat sensor on my 2000 RS so I pulled out my multimeter and the ecu pin out diagram.

The plug is labeled 1, 2 , 3 , 4. Use those and not wire color to discern the duty of each wire, as the wire colors change from car to car.
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