Whether you're dropping a modern EFI engine into a vintage chassis, tuning a standalone ECU, or fabricating a harness from scratch, you need components engineered to work together and built to last. We stock timing hardware, crank triggers, adapter harnesses, bulk wire, and programming tools that enable reliable engine management.

Maybe you're a hobbyist tackling your first LS swap or a seasoned pro wiring up high-performance builds—whoever you are, we're here to help you get the job done right. Professional builders, custom shop technicians, tuning specialists, and hands-on enthusiasts trust EFI Conversions.

When precision matters, quality engine hardware makes all the difference. We designed our timing covers and crankshaft reluctors to support accurate crank signal generation, enabling reliable ignition control in EFI applications.

Converting to coil-on-plug ignition?

Adding a 24x or 58x reluctor for an LS or LT swap?

These components will integrate cleanly with your build. Manufactured to tight tolerances and made for compatibility with popular EFI systems, our hardware helps ensure your engine runs smoothly from startup to redline.

Electronic control is at the heart of any EFI system, and we offer the tools and components needed to program, tune, and manage it confidently. Our lineup includes factory GM vehicle control modules, Holley EFI systems, and HP Tuners core ECUs, along with the adapters, harnesses, and sensors required for integration.

Need to configure an ECU before installation? Our bench programming kits allow you to power up, flash, and tune modules off the vehicle, giving you the control and flexibility to easily set up a fresh ECU or reprogram an existing one.