Haltech NEXUS Rebel LS — Suits Gen III

Standalone Engine Management + FREE Remote Basemap Setup

Take Control of Your Gen III LS Build

Your LS build deserves an ECU that can grow with it.

The Haltech NEXUS Rebel LS is a powerful standalone engine management solution designed specifically for Gen III LS applications. Whether you're building a street car, drift car, drag car, track car, or high-performance swap, the Rebel LS gives you the control and flexibility to properly manage your combination.

And when you purchase your Rebel LS from JJRBoost Motorsports, you're getting more than just an ECU.

🎁 FREE WITH YOUR PURCHASE: Remote Basemap Setup

Buying a standalone ECU is exciting—until you open the box and realize you still have to figure out the initial setup.

What sensors are you running?
What injectors do you have?
What fuel system are you using?
What ignition setup?
What MAP sensor?
Where do you even start?

That's where JJRBoost Motorsports helps.

With your purchase, you'll receive a FREE Remote Basemap Setup based on the information you provide about your specific Gen III LS combination.

Instead of starting with a blank calibration, we'll help establish a custom starting point for your build.

Your FREE Basemap Setup Includes:

• Remote ECU setup assistance

• Initial basemap configuration

• Gen III LS application setup

• Base fuel and ignition configuration

• Engine parameter configuration

• Sensor setup guidance

• Assistance preparing the ECU for initial startup

• Remote guidance through the initial configuration process

You build the car. We help you build the starting point.

That means less time staring at ECU software and more time getting your LS ready to fire.

Why the NEXUS Rebel LS?

The Rebel LS is built around the needs of performance-oriented LS builders who want modern standalone engine management and the flexibility to configure their ECU around their specific combination.

Whether you're keeping your build naturally aspirated or adding boost, the Rebel LS provides a strong foundation for your Gen III LS project.

Perfect For:

• Gen III LS engines

• LS swaps

• Turbo LS builds

• Supercharged LS builds

• Naturally aspirated LS builds

• Drift cars

• Drag cars

• Street performance cars

• Track cars

• Custom engine swaps

• High-performance applications

Build Your LS Your Way

No two LS builds are exactly alike.

Injector size, fuel system, camshaft, MAP sensor, ignition system, throttle setup, sensors, boost configuration, and accessories can all be different.

The NEXUS Rebel LS gives you the flexibility to configure your engine management around your specific combination.

And your FREE Remote Basemap Setup gives you a starting calibration based on the information you provide.

What You Get

Haltech NEXUS Rebel LS

A standalone engine management solution designed for Gen III LS applications.

FREE Remote Basemap Setup

JJRBoost Motorsports will help establish an initial calibration based on your engine and vehicle configuration.

JJRBoost Motorsports Setup Support

Get guidance through the initial configuration process instead of being left with an ECU and a blank screen.

The JJRBoost Difference

Most ECU purchases end when the box arrives.

Ours doesn't.

We want to help you move through the process:

ECU → Wiring → Configuration → First Startup → Tuning

That's why we're including the FREE Remote Basemap Setup with your purchase.

You're not just buying an ECU.

You're getting a better starting point for your LS build.

Ready to Build Your LS?

Get your Haltech NEXUS Rebel LS from JJRBoost Motorsports and receive your FREE Remote Basemap Setup.

Build It. Wire It. Boost It.

JJRBoost Motorsports

Important Compatibility & Tuning Notice

The remote basemap is intended as a starting calibration and is not a substitute for professional dyno or road tuning.

Final tuning should be performed by a qualified tuner using appropriate equipment and safe operating procedures.

Basemap configuration depends on the information supplied by the customer, including engine configuration, injectors, fuel system, ignition system, sensors, throttle configuration, MAP sensor, forced-induction setup, and other relevant specifications.

Customers are responsible for verifying wiring, sensor calibration, mechanical installation, fuel system operation, and engine safety before starting or operating the vehicle.