I am new here , driving 00 Legnum VR4 , manual , ayc , few days ago i changed my ecu MR578135 ,previous owner did some changes,bigger downpipe,exhaust ,and fuel pump dw200 ,boost and fuel map was changed on ecu,everything stock ,but car was missing fuel from 4000 rpm onwards , spark plugs were white , long story short, bought used stock ecu MD340289 from AT car , did anyone have had same issue engine code 61 - A/T-ECU (torque decrease required signal conductor) Systematic 13A- 20 ?