The Best Injectors on the Market. Period.
FAST Precision-Flow™ fuel injectors deliver the super-efficient fuel delivery that high horsepower EFI engines demand. Engineered to yield faster throttle response and superior fuel atomization, FAST™ injectors are manufactured to the tightest tolerances in the industry and are flow certified to ensure consistent performance.
High vs Low Impedance Injectors?
As a general rule, you will need to run high-impedance injectors whenever you retain your factory Engine Control Unit (ECU). Failure to use high-impedance injectors with a factory EFI computer will cause severe damage to it. FAST™ offers high-impedance injectors up to 60 lb/hr, so we’ve got you covered for nearly any performance scenario where you would still want to use your factory computer. For an aftermarket ECU, like the FAST™ XFI™ system, low-impedance injectors, available up to 160 lb/hr, are the way to go.

About the Injector Chart
The FAST™ injector chart will provide a general guideline as to the injector flow volume needed based on expected engine output. NOTE: fuel injectors in and of themselves do nothing to produce power, so don’t choose a larger injector because of the peak HP rating of the injector –too large of an injector will only waste fuel and hurt your throttle response, much like overcarbureting a non-injected engine-. Select the right injector to support the power that your engine produces -you’ll never run out of fuel, and you’ll experience great throttle response, a smooth power curve, and good fuel economy.