COBB Subaru Accesstuner Certification Or log in to access your purchased courses Lessons What is EFI? The 4 Stroke Cycle Trigger and Sync Critical Sensors Fuel Injector Properties Sizing Injectors Ignition Systems Capacitive Discharge Ignition Styles of Engine Management ECU Requirements Installation Methods Tools of the Trade Choosing a Wideband Fueling Requirements Fuel Pressure Regulator Engine Mapping The Benefits of EFI Outro OE Tuning Approach Platform Specific Tuning Overview Subaru Custom Features/Tuning Approach Load Boost Ignition Fuel Flex Fuel/Custom Features Workflow Regulatory