Holley EFI SYSTEMS

Holley Sniper: The Plug-and-Play Pontiac Solution

The Holley Sniper EFI system is the most popular choice for Pontiac owners, offering carburetor simplicity with EFI sophistication. Butler Performance offers these systems as part of a complete solution, solving the common problem of fuel delivery.

Key Holley Sniper Features (Sniper 2 and Stealth):

• Self-Tuning Capability: The integrated ECU uses a wide-band oxygen sensor to automatically adjust the fuel map while the vehicle is driven. After a simple setup wizard, no laptop or tuning experience is required for street performance.

   
   

• Carburetor Aesthetics: The Sniper 4150 and Stealth throttle bodies bolt directly onto a standard 4-barrel intake manifold, maintaining the classic engine bay look while offering power support up to $650\text{hp}$ naturally aspirated.

   

• Ignition Integration: Holley's HyperSpark ignition systems are designed to plug directly into the Sniper ECU harness. Butler offers these as part of the Ignition Series kits, allowing the EFI unit to control ignition timing—the key to maximizing power and efficiency under all driving conditions.

   
   

Butler's Complete Holley EFI Solutions

The most critical challenge in any EFI conversion is the high-pressure fuel system. Butler eliminates this roadblock by bundling the Holley EFI unit with a complete, matched fuel system:

• EFI-Ready Fuel Tank: A brand new, replacement fuel tank engineered with internal baffling to prevent fuel pump starvation during spirited driving.

   

• In-Tank High-Flow Pump: Includes a high-flow electric fuel pump (e.g., $255\text{lph}$) and sender pre-installed, offering quiet operation and consistent high-pressure fuel supply ($58.5\text{psi}$ is standard).

   

• Complete Line Kits: All necessary high-pressure fuel lines, fittings, and a fuel pump block-off plate for the mechanical pump boss are included, making the installation seamless from tank to throttle body.

   

Beyond Sniper: Terminator and Tri-Power Options

For higher horsepower targets or unique aesthetic needs, Butler Performance provides other Holley-based solutions:

• Holley Terminator X Multi-Port EFI: For max-effort builds or those preferring the superior distribution of multi-port injection, Butler offers custom kits using the Holley Terminator X ECU. This system is designed for discrete fuel injectors mounted in a dedicated EFI intake manifold, offering granular control and supporting power levels well into the four digits.

   

• Tri-Power EFI Systems: For the purist, Butler offers a custom Tri-Power EFI system that uses a trio of discreet throttle bodies (often based on Holley components) to maintain the iconic Pontiac "three-deuce" look while delivering modern fuel injection performance and reliability.

By offering Holley’s best-in-class EFI systems combined with their own engineered Pontiac-specific fuel delivery solutions, Butler Performance makes the transition to reliable, modern electronic fuel management easier than ever for the Pontiac V8 owner.