EFI Conversions

Electronic Fuel Injection (EFI) conversions modernize classic and older vehicles by replacing carburetors with advanced fuel injection systems, improving drivability, fuel efficiency, and emissions compliance. At Apex Automotive in Gilbert, AZ, we specialize in EFI conversions that integrate seamlessly with your engine while accounting for the harsh Arizona desert environment. EFI systems use high-pressure fuel pumps, precision injectors, sensors, and engine control modules (ECMs) to deliver the optimal air-fuel mixture under all operating conditions. This technology enhances cold starts, throttle response, and overall engine management compared to carburetors, which can struggle with Arizona’s extreme heat and altitude variations. David Jr., your personal mechanic, leads each EFI conversion with a diagnostic-first philosophy. We begin by assessing your vehicle’s engine family—commonly Ford, GM, or Mopar platforms—and reviewing its current fuel delivery system. From there, we design a tailored EFI solution using top-tier components such as Holley or FiTech systems, which include high-pressure fuel rails, injectors sized to your engine’s displacement and power needs, and compatible fuel pumps and tanks. Sensor integration, including throttle position, intake air temperature, manifold absolute pressure, and oxygen sensors, is carefully calibrated to ensure precise engine control. Installation is performed with manufacturer torque specs and rigorous wiring standards to withstand Gilbert’s heat and dust. We then perform detailed tuning using handheld programmers or laptop-based software to optimize fuel maps, ignition timing, and idle control, ensuring smooth operation and emissions compliance. EFI conversions also facilitate easier diagnostics in the future, allowing David Jr. to quickly monitor sensor data and troubleshoot issues with advanced OBD-II tools. All EFI conversion services at Apex Automotive are by appointment only, guaranteeing focused, expert attention and quality workmanship. Upgrade your classic or project vehicle with confidence, knowing our father-son team combines decades of engine expertise and precision machine shop relationships to deliver durable, high-performance EFI systems tailored for East Valley driving conditions.