I have since had the vehicle on a dyno to tune and it came up pretty well. But the 1227747 is limited, it has no rev limiter and with the light load and full load maps sorted I still cannot seem to get mid throttle above 4000 rpm to not lean out. I think if I used an ecm with more memory capability I could get the fuel sorted (it seems to be the lack of adjustability running fuel adders)

does anyone know if the 1227808 will cope with 2 tbi injectors and if it has better fuel and spark tables?