FuelTech Multi Purpose Relay
About FuelTech
FuelTech is a specialist in standalone engine management and motorsport electronics, with roots in Brazil and a U.S. operation based in Georgia. The company was registered in 2003 and grew from a dominant position in the Brazilian performance market into an international brand with dealers across six continents. Its systems are aimed at drag racers, circle-track teams, marine builders, and street-performance enthusiasts who need more control than a factory computer allows.
A Complete Engine Management Ecosystem
What sets FuelTech apart is that the ECU, sensors, ignition hardware, and driver modules are designed to work together. The PowerFT family (FT450, FT550, FT550LITE, and FT600) offers sequential injection and ignition, closed-loop O2 control, an integrated datalogger, boost and nitrous control, and traction control. The line is IP67 rated, which makes it a practical choice for marine applications, and map files are compatible across the family, so you can move up to a larger unit and keep your existing tune. The newer VisionFT line, including the FT700 and FT470, adds app-based tuning from a phone, tablet, or computer.
If you are building a custom setup, browse the FuelTech fuel injection electronic control units. The tuning software is free to download, and its touchscreen interface lets you adjust maps without a laptop on models with a built-in display.
Fuel and Ignition Hardware
High-horsepower engines often need more current than an ECU can switch directly. FuelTech's fuel injector control modules are peak-and-hold injector drivers that can be paired with a variety of ECUs. For spark, the FuelTech ignition coils include inductive smart coils with a built-in igniter and CDI racing coils, backed by ignition modules, wiring harnesses, and mounting hardware.
Control, Protection and Accessories
Racing electronics are only useful if the driver can operate them quickly. FuelTech switch panels come in 4, 5, and 8 button Mini sizes. They connect over CAN, can be assigned to functions such as nitrous, two-step, burnout, or fan control, and double as input expanders to free up ECU inputs. When you build your own harness, the FuelTech multi-purpose relays, including sealed 40A relays and relays with a built-in fuse, protect and power the ECU, injectors, and coils.
The catalog also includes complete wiring harnesses, pressure sensors, thermocouples, dashboard insert panels, mounting brackets, and filters, so a full installation can be sourced from a single manufacturer.
Things to Consider When Choosing
- Engine layout: match the ECU's cylinder or rotor capacity and the number of inputs and outputs to your build.
- Display needs: choose a touchscreen unit for on-ECU tuning, or a screenless unit if you already have a dash.
- Ignition type: smart coils simplify coil-on-plug wiring, while CDI systems suit high-boost and high-compression builds.
- Injector type: confirm that your injector driver supports the injectors you run.