Holley 550-511K EFI Self-Tuning Master Kit
- Breathe new life into your Small Block Chevy or Big Block Chevy engine with this easy-to-install fuel injection/distributor ignition kit.
- Throttle body mounted ECU – no extra computers to mount or relocate.
- Self tuning ECU means you don’t have to be a computer/tuning expert to enjoy EFI.
- Precision machined shutter wheel designed for improved accuracy at extreme engine RPM.