Edelbrock 35770 Pro-Flo 4 EFI Fuel Injection System Small Block Chevy 550HP

The Edelbrock Pro-Flo 4 EFI System delivers cutting-edge electronic fuel injection technology for 1986 and earlier Small-Block Chevy engines. This complete plug-and-play system combines proven performance with modern tuning capabilities, making it ideal for street rods, muscle cars, and classic truck builds seeking reliable fuel injection.

Complete System Includes:

• Traditional 4150-style satin finish single plane intake manifold
• Four 35 lb/hr fuel injectors capable of supporting up to 550 HP at 58 PSI fuel pressure
• Plug-and-play distributor designed specifically for Pro-Flo 4 compatibility
• Fully terminated wiring harness with clearly labeled connections (Made in USA)
• Next-generation ECU with faster processor and waterproof design (50% smaller depth than previous version)
• Upgraded Bluetooth chip for reliable wireless connectivity without dropped connections

Advanced Tuning Features:

The exclusive E-Tuner 4 app provides complete control over air-fuel ratios, ignition timing, idle speed, acceleration enrichment, cooling fan operation, and rev limiter settings. The system features self-learning capability that continuously adjusts calibration for maximum performance using dyno-developed base maps. Multiple dashboard displays let you monitor engine vitals in real-time through your Android smartphone or tablet.

Easy Setup:

The free E-Tuner 4 app (available on Google Play Store) includes a simple setup wizard to get you running quickly—no laptop tuning required. The system communicates wirelessly via Bluetooth, and the intuitive interface maintains the simplicity Pro-Flo is known for while offering advanced tuning options for experienced users.

California Proposition 65 Warning: This product may contain chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.