For Troubleshooting Tips setting up your New Holley Sniper EFI System, please see this helpful video from Holley Performance.

Sniper EFI XFlow Self-Tuning Fuel Injection System Features:

• Supports up to 800 naturally aspirated HP, 1375 forced induction HP using (8) 120 lbs./hr Injectors
• 900 CFM flow rate
• Compatible with draw-through or blow-through forced induction
• 2.5 Bar MAP Sensor
• Integrated ignition timing control
• Built-in single-stage progressive nitrous controller
• Adjustable boost control 
• Programmable target air/fuel ratio at specific boost intervals
• (3) Programmable 0-5 V sensor inputs for oil, fuel, dome or nitrous pressure sensors
• (6) Programmable ground outputs
• (1) +5 V reference output
• (1) Sensor ground
• Dual pattern carb flange designed to fit 4150 and spread bore manifolds
• Throttle body mounted ECU
• (4) wiring connections required (Battery +, Battery -, Ignition, RPM)
• High-resolution color touchscreen controller
• calibration wizard tunes ECU without the use of a computer
• Genuine Bosch LSU 4.9 wideband oxygen sensor provides realtime fuel map learn
• OEM-style throttle position sensor and idle air control
• 2.500 in. clamp-on oxygen sensor kit allows easy integration into older exhaust systems
• -6 AN Female O-Ring Inlet/Outlet 
• 200R4, 700R4 TH350 Compatible transmissions

Installation Notes:

Sniper EFI XFlow requires an external fuel pressure regulator (sold separately).

E-85 Fuel not recommended.