This Sniper 2 EFI master kit pairs the self-tuning Sniper 2 throttle body with a returnless-style in-tank drop-in fuel module, built for classics running a returnless fuel system. This configuration does not include the optional Power Distribution Module (PDM); wiring connects directly to the throttle body's main harness. A 3.5" full-color handheld display handles setup and tuning.
Key Features:
- All-new Sniper 2 design built on the proven Sniper EFI conversion platform
- Returnless-style drop-in fuel module built for in-tank installation
- Includes a genuine Bosch LSU 4.9 wideband oxygen sensor with clamp-on kit, stainless T-bolt clamps, and a stainless weldable flange
- Cast-in fuel crossover from the primary to secondary fuel rail
- Next-generation ECU offers improved RF noise and interference resistance
- Redesigned injector connector for improved reliability
- Redesigned throttle shaft and plate geometry for a smoother throttle feel
- "Hidden Harness" wiring exits from the rear of the throttle body for a clean installation
- Next-generation mil-spec style M8 positive-lock connector for CAN1/CAN2
- Sniper 2 throttle bodies are individually serialized for improved customer service and warranty tracking
- Integrated transmission kick-down provisions for GM TH350/400, 200-4R/700R4, and Ford C4/C6
- Adapters for other ignition types sold separately (CD box or MSD Pro Billet/crank trigger to Sniper 2)
- Only four wiring connections required: Battery+, Battery-, Switched Ignition, and RPM
Specifications:
- Flange Style: 4150
- CFM: 800
- Fuel System: Universal Returnless Drop-In Module
- Injector Size: 100 lb/hr @ 58.5 PSI (4 injectors)
- Fuel Pressure: 58.5 PSI
- MAP Sensor: 2 Bar
- Max Horsepower Rating: 650 HP naturally aspirated / 575 HP boosted
- Power Distribution Module: No
- Transmission Compatibility: All
- User Interface: 3.5" Handheld
- Finish: Polished
- Part Number: 550-510-3XD
Installs at home with common hand tools using Holley's installation manual and video support.
FAQ
What is a returnless drop-in fuel module?
It's an in-tank fuel module built for vehicles running a returnless-style fuel system, replacing the need for a separate return line to the tank.
Does this kit include the Power Distribution Module?
No. This configuration wires directly into the throttle body's main harness without the optional PDM.
What size display comes with this kit?
A 3.5" full-color handheld display.
How much horsepower does this system support?
Up to 650 hp naturally aspirated or 575 hp with forced induction.
How many wiring connections are required?
Just four: Battery+, Battery-, Switched Ignition, and RPM.
