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. The optional Power Distribution Module (PDM) isolates the core EFI and ignition wiring into one location: slide the stripped wire ends under the positive-lock connector, tighten the set screw, and only battery power and a switched 12-volt source are required. 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
- Power Distribution Module (PDM) simplifies wiring to essentially battery, ground, and a switched 12-volt source
- 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
- User-friendly setup wizard builds a base tune from a few simple engine questions, no laptop required
- Compatible with the full Sniper EFI Ecosystem, including HyperSpark ignition and multiple display interfaces
Specifications:
- Flange Style: 4150
- CFM: 800
- Fuel System: Universal Returnless Drop-In Module
- Fuel Pump Flow Rating: 340 LPH
- 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: Yes
- Transmission Compatibility: All
- User Interface: 3.5" Handheld
- Finish: Polished
- Part Number: 550-510-3PD
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.
What does the PDM do?
The Power Distribution Module isolates the core EFI and ignition wiring into one location, reducing the vehicle-side wiring to essentially battery power, ground, and a switched 12-volt source.
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.
Do I need a laptop to tune this system?
No. The handheld's setup wizard builds a base tune from a few simple engine questions and the system self-tunes from there.
