I recently just finished rebuilding and turbocharging my s54 in my 2002 e46 m3 and i am looking for a solution for engine management. The first thing i looked at was the aem infinity for the e46 m3 but after contacting multiple distributors it seems like the jumper harness was discontinued. After that i asked if there was any way i could get a custom harness made for the infinity and there responses where that they could not make a harness for the infinity nor could they make a jumper harness for any other ecu they had. I talked to the sales department at Wiring Specialties and was told the same thing. If anyone has any suggestions or could provide any type of help i would be very thankful. If anyone is interested in my build i have documented my work on my Instagram @Project46_M3.