Holley HP EFI 4bbl Multi Port Fuel Injection System 550 810

Holley HP EFI 4bbl Multi Port Fuel Injection System 550-810.

HP Multi-Port EFI systems for small or big block Chevys are ready for the street or strip with the simple swap of an intake! Whether you have a stock engine, crate or custom-built engine, HP Multi-Port systems can help you maximize performance! By utilizing a laptop (or the optional 5.7" full color touch screen LCD) along with the HP's self-tuning capabilities, the HP Multi-Port EFI system will- Holley HP EFI 4bbl Multi Port Fuel Injection System 550-810.