Holley 550-871K Sniper Stealth 4150 Self-Tuning Fuel Injection System Master Kit
510-550-871K
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Master Kits
Holley 550-871K Sniper Stealth 4150 Self-Tuning Fuel Injection System Master Kit Features:
- Holley 4150 flange EFI carburetor replacement
- Supports up to 650 naturally aspirated HP or 600 forced-induction HP using (4) 100 lbs./hr Injectors
- 870 CFM flow rate
- All system wiring exits below the rear fuel injector cover, for a complete stealth installation and appearance
- 2.5 Bar MAP sensor
- Integrated ignition timing control
- 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 or extensive engine tuning knowledge
- Genuine Bosch LSU 4.9 wideband oxygen sensor provides realtime fuel map learn
- OEM-style throttle position sensor (TPS) and idle air control (IAC)
- 2.500 in. clamp-on oxygen sensor kit allows easy integration into older exhaust systems
- High-pressure fuel crossover line included
- Complete fuel system including 20 ft. of 3/8 in. Vapor Guard Fuel Hose, external fuel pressure regulator, fuel pump, filters, necessary hardware and bulkhead fuel line return fitting
- 3.280 in. overall height
- -8 AN (3/4-16) female O-ring inlet/outlet
- Kickdown provisions for GM: TH350, TH400, 200R4, 700R4 Ford: C4, C6
- Compatible with Holley Ultra XP Carburetor drop base air cleaners as well as most stock-style air cleaners with air cleaner locator provisions
Installation Notes:
Sniper Stealth 4150 EFI requires an external fuel pressure regulator (sold separately) that is capable of a base pressure of 58.500 PSI.
For Troubleshooting Tips setting up your New Holley Sniper EFI System, please see this helpful video from Holley Performance.
Specifications:
Will this work with Morrary 9000 distributor?
Will this fit my 1998 Chevy Cheyenne with the 7.4 liter vortec?
Do i need an extra fuel pressure regulator?? I see the note stating that but also see one already on the first picture
Is it required to remove spacer underneath carburetor. Or can it stay with fuel injection
Will this work with a procharger?
Will this work on a ford dual plane edelbrock rpm air gap intake
Will this work with an MSD ignition system
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