Katech High-Performance Gen VI LT1/LT4 Low Side Dual Fuel Pump Module

Katech Gen VI LT1 / LT4 Low-Side Dual Fuel Pump Module

Designed for LT1 and LT4 fueling upgrades in Gen 6 Camaro and CTS-V platforms, this drop-in dual pump module increases low-side fuel capacity while retaining factory system functionality.

The Katech Low-Side Dual Fuel Pump Module is a purpose-engineered fueling solution for Gen VI LT1 and LT4 applications, designed specifically for Gen 6 Camaro and CTS-V3 platforms that require increased low-side fuel capacity without sacrificing factory system functionality.

Unlike auxiliary pump systems or modified factory modules, this sealed, drop-in dual pump module retains critical OEM features including factory returnless fuel system architecture, fuel level sender functionality, EVAP compatibility, and low-level fuel performance. It is engineered to support increased fuel demand while maintaining OEM-style integration and drivability.

Key Features

• Dual OEM-grade high-output fuel pump configuration for increased low-side fuel capacity
• Sealed drop-in module design with no drilling, cutting, or bonded fittings required
• Integrated venturi system designed to match OEM low-level fuel pickup performance
• Retains factory system functionality, including:
  • Returnless fuel system architecture
  • Fuel level sender operation
  • EVAP system functionality
  • Factory tank connections and sealing
• Primary fuel pump controlled by factory Fuel Pump Control Module (FPCM)
• Secondary fuel pump controlled by external controller or trigger system
• OE-style construction designed to maintain proper module sealing and system integrity

Low-Level Fueling Performance

The module incorporates a venturi-based transfer system designed to match OEM fuel pickup performance at low fuel levels. This helps maintain consistent fuel delivery during cornering, braking, acceleration, and sustained lateral loading.

This design supports high-performance street and track use while maintaining proper fuel scavenging characteristics within the tank. As with any high-performance application, it is recommended to maintain fuel levels above 1/8 tank during aggressive driving conditions.

Power Capability

In dual pump configuration, this system has been real-world tested to support up to approximately 900 RWHP on E85 within a factory-style returnless fuel system.

When operated in single pump configuration, the module delivers performance comparable to factory high-output applications, operating within approximately 10% of LT5 low-side fuel pressure behavior depending on system demand and calibration.

• Dual pump operation: increased fuel capacity for high horsepower applications
• Single pump operation: allows staged system growth for future power upgrades

Installation & Integration

This fuel module is designed as a true drop-in replacement for the factory module, allowing installation without permanent modification to the fuel tank or system.

• No drilling or bonded fittings required
• Retains factory electrical and fuel system connections
• Maintains factory sealing and tank interface

The primary pump is controlled by the factory Fuel Pump Control Module (FPCM). The secondary pump requires an external control strategy, such as a Hobbs switch, standalone controller, or a compatible PWM controller solution.

Requirements

To use the Katech Low-Side Fueling Solution, a post-pump fuel filter (5–10µm, stainless or micro fiberglass, E85 rated) is required.

• Secondary pump activation system required
  • External fuel pump controller, trigger, or Hobbs switch
  • Optional plug-and-play solution: Katech Gen VI LT1/LT4 High-Performance Dual Fuel Pump Controller & Integration Harness (KAT-A7815)

For a complete plug-and-play style installation, the Katech External Remote Fuel Filter Kit (KAT-A7844) is recommended.

Additional Notes

• Some vehicle configurations may not utilize the venturi T-fitting. A supplied cap and clamp are included to properly seal the unused port when required.
• This module is designed to increase fuel capacity while maintaining proper operation of the factory-style returnless fuel system.

Handling & Unpacking Warning

IMPORTANT: This fuel module contains precision internal components that must be handled carefully during unpacking and installation.

• Do not apply force to the fuel level sender arm or float mechanism
• Do not lift or support the module by the arm assembly
• Handle the module by the main body only during removal from packaging

Improper handling may result in damage to the fuel level sensor assembly, which can affect fuel level readings and overall system function.

Why Choose Katech Engineering

Since 1977, Katech Engineering has developed race-proven systems for high-performance street, endurance racing, and road racing applications. The Low-Side Dual Fuel Pump Module reflects that same engineering approach, delivering increased fuel capacity while maintaining OEM-style system functionality and integration.

This is a purpose-built solution for customers who require higher fuel volume without compromising the behavior and reliability of the factory fuel system.