High-pressure fuel systems required by Electronic Fuel Injection systems pose a possible safety threat should the car ever be involved in an impact.   We like to install Inertia Fuel Cutoff Switches in the EFI retrofits performed at the V8 Speed and Resto Shop.   The Fuel Cutoff Switch turns off the fuel pump in an impact to prevent dangerous high-pressure gasoline spraying on a hot engine and causing a fire.   Continue reading for the video!