M42 is 1.8L and M44 is 1.9L so minor mechanical difference but largely the same motors. Sorry I can't offer any specific advice but if converting the 4 cyl motors is anything like converting the 6 cylinder motors everything needed to do the OBD conversion is simple swap of sensors, wire harness and ECU (etc). Maybe you are the pioneer for this conversion, just tackle it and keep us posted. __________________ Alpine Weiß 1995 318ti M50tu mostly stock, chip'd 413, AFE Intake. e36 M3 front brakes, e30 M3 rear calipers. e28 3.25 LSD + e30 axles. Custom stainless Magnaflow 2 in 1 out muffler. R.I.P schwartz 1990 325is |