220 PPH Fuel Injectors 8pk High Impedance

The HOLLEY 220 PPH Fuel Injectors 8-pack High Impedance (SKU HLY522-228XFM) is an essential upgrade for those converting from carbureted systems to EFI, enhancing performance in naturally aspirated builds and mid-range displacement engines. These injectors are designed to deliver a flow capacity of 220 pounds per hour, making them suitable for small-block and mid-size V8 applications where stock fuel delivery may be inadequate.

The high-impedance design, operating at approximately 14 ohms, allows for seamless integration with both OEM and aftermarket ECUs without the need for additional resistor packs. This configuration ensures quicker opening and closing times compared to low-impedance injectors, resulting in improved fuel pulse control and atomization across various RPM ranges. Precision machining of the internal pintle geometry and valve seat tolerances guarantees consistent flow rates, reducing the risk of lean or rich cylinder variations that can affect drivability.

Ideal for performance enthusiasts, this 8-pack provides complete cylinder coverage for inline-8, V8, or modular engine configurations that require individual injector control. Whether tuning a street engine, preparing for bracket racing, or restoring a classic vehicle with modern fuel management, these injectors are a reliable choice for enhancing performance and efficiency.