Holley 550-842 Sniper EFI Stealth 4500 with Black Ceramic Finish
510-550-842
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Black Ceramic Finish
Holley 550-842 Sniper EFI Stealth 4500 with Black Ceramic Finish Features:
- Self-tuning ECU with Calibration Wizard requires no laptop
- 3.5-inch high-res color touchscreen for calibration, tuning, gauges, and data logging
- 4500 flange with 2.125 in. throttle blades flow 1440 CFM
- Supports up to 1500 HP naturally aspirated or 1250 HP forced induction
- Gen III Ultra Dominator style 4 bolt air cleaner flange
- Throttle body mounted ECU (requires no ECM mounting)
- Nitrous and Forced Induction Compatible
- Compatible with either draw-through or blow-through forced induction applications
- Programmable target AFR for boost level
- Integrated single stage wet or dry progressive nitrous controller
- Integrated boost control
- 2.5 bar MAP sensor supports 21.5 lbs. of boost
- Programmable Inputs/Outputs
- Programmable launch control by using 2-step and timing retard functions
- 6 programmable ground outputs for triggering external devices (ex. nitrous solenoids)
- 5 programmable inputs for turning on certain functions (ex. timing retard)
- Customizable secondary fuel pump output (can be activated by TPS, RPM, or boost)
Holley 550-842 Sniper EFI Stealth 4500 with Black Ceramic Finish Specs:
- Flange Size: 4500
- Fuel Pressure: 58.5 PSI (requires external fuel regulator)
- Height: 3.850 in.
- Injector Size: 100 lb.-hr
- Inlet/Outlet Size: -8 AN
- Map Sensor: 2.5 Bar
- Throttle Bore: 2.125 in.
- CFM: 1440
Holley 550-842 Sniper EFI Stealth 4500 with Black Ceramic Finish Notes:
- Not for use with engines producing less than 800 horsepower
- Gasoline fuel only
- Use of leaded race fuels will shorten oxygen sensor life
- For Troubleshooting Tips setting up your New Holley Sniper EFI System, please see this helpful video from Holley Performance.
Emissions Note:
This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.
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