FuelTech Fuel Injector Control Module

FuelTech Injector Drivers: Precision Control for Low Impedance Injectors

Large racing injectors need more than a simple signal from the ECU to work properly. FuelTech's fuel injector control modules, known as Peak & Hold drivers, sit between the engine management system and the injectors to deliver the right current at the right moment. Explore the full lineup of fuel injector control modules or learn more about the company on the FuelTech brand page.

Why Peak & Hold Control Matters

Low impedance injectors, often called peak and hold injectors, operate by applying a stronger peak current to open the injector quickly, then switching to a weaker hold current that keeps it open for the specified time. Without a driver managing that transition, the injector can quickly warm up and burn out. A dedicated control module protects the injectors while improving how fast and consistently they respond, which is especially valuable on boosted, nitrous, and high-horsepower builds running very large injectors.

Choosing the Right Current Rating

FuelTech's classic driver family is a 4-channel design offered in three current versions, matched to injector impedance:

• 2A/0.5A: controls up to 4 injectors with impedance between 3 and 7 ohms, such as Bosch 160 lb/h style injectors.
• 4A/1A: controls up to 4 injectors with impedance between 1.5 and 3 ohms.
• 8A/2A: controls up to 4 injectors with impedance below 1.5 ohm, including FuelTech's own FT Injector line.

High impedance injectors above 7 ohms do not need a Peak & Hold box at all, so matching the driver to your injector's measured resistance is the key first step. Each unit is compact, and a mounting kit is included for secure installation.

The Peak & Hold PRO

For tuners who want more flexibility, FuelTech developed the Peak & Hold PRO. It replaces the original driver products in a single part number, giving the tuner more control and safer operation of low impedance injectors. Its amp output for the injectors is adjustable, removing the need to consult a chart to pick the correct amperage. It offers two channels per unit, so one box can control 8 injectors and two boxes can handle 16. It communicates over CAN, so data can be recorded in the FuelTech data log and viewed in FTManager.

Built by a Motorsport Electronics Specialist

FuelTech is a Brazilian company specializing in high-end motorsports electronics, including standalone engine management systems, wideband controllers, low-Z injector drivers, and data loggers. That engine management background shapes its injector drivers: they are designed alongside the ECUs and injectors that rely on them. FT Injectors are compatible with any ECU and all available fuels, including gasoline, ethanol, alcohol, and nitromethane, and the drivers are intended to pair with them for demanding drag, road race, and marine applications.

What to Consider Before You Buy

• Confirm your injector's impedance and select the matching current rating.
• Count your injectors and channels to decide whether a 4-channel or PRO unit suits your setup.
• Consider whether you want CAN data logging and adjustable current for tuning flexibility.
• Plan for wiring, since harness options differ between driver versions.

Whether you are upgrading to larger injectors or building a new high-output engine, a properly matched FuelTech driver helps your injectors open cleanly and hold reliably across the RPM range.