COBB GTR 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 Accesstuner Table Structure and Tuning Approach Load Fuel IGN Boost Speed Density Tuning COBB Accesstuner GTR Special Features Safety Systems Transmission Flex Fuel Workflow Regulatory