If you’ve been waiting to pull the trigger on electronic fuel injection, your wait could be over. Summit Racing’s MAX-efi 500 Fuel Injection System makes converting from a carburettor to EFI virtually a no-brainer. The MAX-efi 500 features a four-injector aluminium throttle body that bolts to most four-barrel carburettor intake manifolds, and uses the factory-style throttle linkage.

The throttle body has integral fuel rails and also houses the Temperature Manifold Absolute Pressure (TMAP), intake air temperature and throttle position sensors, and the idle air control motor. That makes the wiring harness more compact and easier to install. The only other sensors are coolant temperature and exhaust oxygen. If a sensor fails, replacements are available at most auto parts stores.

Tuning the MAX-efi 500 is easy, too. The self-tuning ECU continually adjusts fuel delivery to provide the optimum air/fuel ratio under all climate and altitude conditions, and has a self-adjusting “limp home” mode to protect your engine if a sensor fails. You even get a data-logging feature to track system performance under operating conditions.

The Summit Racing MAX-efi 500 Fuel Injection System requires a return-style fuel system with a pressure regulator; an electric fuel pump that flows at least 60 PSI; and two fuel filters—a 100-micron filter between the tank and the pump, and a 10- or 40-micron filter between the pump and the throttle body.

SEE SUMMIT RACING’S MAX-EFI 500 FUEL INJECTION SYSTEM ENDS.