HITACHIBASE Primary Base Ignition Timing Advance Table across Engine Load (%) vs RPM Target Engine Idle RPM across Engine Coolant Temperature (-30°C to +80°C) Primary Open Loop Fueling Air-Fuel Ratio (AFR) Target Map 3DA6003005 A8D9 DB1S16K4 3DA6003005 00-06 USDM/EDM/JDM Subaru Impreza / Legacy / Forester NA Hitachi Speed-Density MT/AT SH7055 subaruhitachi 512kb