Holley EFI HP EFI ECU & Harness Kits 550-607N

Looking for a plug and play kit for your GM LS engine? The HP ECU allows you to accurately control the fuel and ignition of your engine plus much more. Got a stock LS engine? Simply download a base map and you're on your way. Got a turbocharged, nitrous fed LS engine on water/meth? This HP EFI kit can control that too!

Features

• Genuine OEM Connectors
• Single pack connector kit includes: Connector, Pins, Seals, and TPA