Omni LT4 Max Effort Package (Stage 4)

The Omni LT4 Max Effort Package represents the highest level of performance we recommend while retaining the factory LT4 supercharger. Built upon the proven Foundation, Street, and Street/Race Packages, this combination is engineered for customers looking to maximize every ounce of performance from the OEM LT4 platform.

At the heart of the Max Effort Package is the Omni Port Injection System, developed to provide the additional fueling required for full E85 operation and higher boost levels. By combining supplemental port injection with our Kong Stage X supercharger porting, we can fully utilize the capabilities of the factory ECU’s flex fuel strategy while dramatically increasing airflow and overall engine efficiency.

Unlike lower horsepower combinations limited by the factory direct injection system, the Omni LT4 Max Effort Package delivers the fuel volume necessary to safely support substantially more horsepower. Running full E85 allows us to increase boost, optimize ignition timing, and unlock the full potential of the LT4 platform while maintaining excellent drivability and OEM-level functionality.

For customers looking to stay with the factory blower, this is the ultimate LT4 package.

Package Includes

Everything included in the Omni LT4 Foundation Package, Omni LT4 Street Package, and Omni LT4 Street/Race Package, plus:

Omni Port Injection System

• Kong Stage X Supercharger Porting
• Nick Williams 103 mm Throttle Body
• OMS Flex Fuel Kit
• Additional XRP Crimped Fuel Lines
• Supplemental Fuel Rails
• FIC 1000cc Injectors
• TooHighPsi Reflex Controller
• Katana Port Injection Plates
• Full Flex Fuel Calibration

Custom Calibration

• OEM ECU Calibration
• TCM Calibration (Automatic Vehicles)
• TooHighPsi Reflex Controller Calibration
• Complete In-House Dyno Tuning

Expected Performance

The Omni LT4 Max Effort Package is designed for customers pursuing 800+ rear-wheel horsepower while retaining the factory LT4 supercharger.

With the addition of the Omni Port Injection System and Kong Stage X blower porting, the fueling limitations of the factory direct injection system are significantly expanded, allowing the engine to safely operate on full E85 while taking advantage of substantially higher boost levels than would be recommended on 91-octane fuel.

The result is a combination that delivers exceptional horsepower, instant throttle response, outstanding drivability, and the reliability required for both aggressive street driving and track use.

Actual horsepower will vary depending on vehicle configuration, transmission, fuel quality, and supporting modifications.

Why Port Injection?

While blower porting can improve airflow on its own, we strongly recommend pairing it with port injection and full E85 operation.

The additional fueling provided by the Omni Port Injection System allows us to safely increase boost and fully utilize the factory ECU’s flex fuel capabilities. Rather than chasing peak dyno numbers, our goal is to build a balanced combination that delivers reliable horsepower, repeatable performance, and long-term durability.

Who Is This Package For?

The Omni LT4 Max Effort Package is perfect for:

• Customers looking to maximize the factory LT4 supercharger.
• Enthusiasts committed to running full E85.
• Owners targeting 800+ rear-wheel horsepower.
• Drivers wanting the highest level of OEM-based LT4 performance.
• Customers looking for a complete, professionally engineered fueling and airflow solution.

Why Choose Omni Motorsports?

The Omni LT4 Max Effort Package is the result of years of development on our own vehicles and customer builds. Every component has been selected to work together as a complete system, eliminating the guesswork often associated with high-horsepower LT4 builds.

From the Omni Port Injection System and Kong Stage X blower porting to custom calibration of the OEM ECU, TCM, and TooHighPsi Reflex Controller, every detail is designed to maximize performance without compromising reliability.

Upgrade Path

For customers whose goals extend beyond the capabilities of the factory LT4 supercharger, the Omni LT4 Race Package (Stage 5) introduces larger supercharger systems, advanced engine combinations, and the supporting components required to pursue four-digit horsepower.