[phil finlayson]

Hi I had a fadec acis running super rich 9-1 and 10-1 fouling plugs, had a chat to a drag racing guy, ours are a memory ecu as they dont take afr readings and respond accordingly , east to tune though, put a mechanical fuel pressure gauge on rail after last filter (electrical pressure gauge are not acurate enough) change the fuel regulator to an adjustable (30-70 psi), fit or use an AFR Air Fuel Ratio gauge, our ecus can run as low as 30-35 psi fuel pressure up to 70 psi , so now tune your engine to 12.5-1 to 13-1 fuel ratio at operating rpm on both pumps, IF YOU ARE UNDER 40 PSI YOUR BASE MEMORY TUNE IS SHIT AND OVER 60 , mine is turbo and am running 46 psi with both pumps on one pump is 43 psi and alters AFR. EASY PEASY