JB-Race Engineering ECU

The missing puzzle piece for maximum performance of your fuel-injected dirt bike

The JB-Race Engineering ECU was specifically developed for the current KTM, Husqvarna, and GASGAS TBI models. It is a fully plug-and-play motorsport ECU for riders who want more than just a standard map.

Developed on the dyno, validated in tough off-road use, and already successfully deployed in racing – including podium finishes in the ADAC Junior Cup and strong results in the FIM Junior World Championship.

This ECU is not a simple upgrade. It is the foundation for precise tuning, reproducible performance, and maximum engine control.

Developed for maximum control

The JB-Race Engineering ECU completely replaces the standard control unit and operates directly on the original wiring harness. No modifications, no cable clutter, no compromises.

Thanks to our specially developed strategy for the TBI two-stroke engine, the engine condition is captured significantly more precisely than with classic standard approaches. Especially the self-developed volumetric efficiency algorithm based on crankcase pressure enables finer load determination and thus a significantly more controlled injection and ignition strategy.

Highlights

✅ Plug & Play for KTM, Husqvarna, and GASGAS TBI models
Fits directly onto the OEM wiring harness.

✅ CAN-based Map-Switching
Compatible with the original OEM mapping switch.

✅ Integrated SD card logging
Directly record, evaluate, and purposefully develop engine data.

✅ Extremely precise ignition calculation
Less than 0.10° deviation at 16,000 rpm.

✅ Rev-safe up to over 20,000 rpm
Designed for high-revving racing engines.

✅ Proprietary 2T volumetric efficiency algorithm
Load calculation via crankcase pressure sensor instead of simple standard models.

✅ Additional freely assignable inputs and outputs
For individual functions, sensors, or expansions.

✅ Continuous product updates
The ECU is constantly being developed further and remains technically up-to-date.

✅ Optionally expandable with external JB Lambda/EGT module
Lambda and exhaust gas temperature measurement are available via a separately sold add-on module.

Optional Lambda & EGT Module

For even deeper analysis and more precise tuning, a separately available JB-Race Engineering Sensor Module is available.

This module allows the evaluation of:

• Bosch LSU 4.9 Wideband Lambda
• Type-K Thermocouple for Exhaust Gas Temperature
• CAN communication to the ECU
• Extended logging and analysis functions

This keeps the ECU itself compact and robust, while lambda and EGT functions can be added modularly.

Who is the JB-Race ECU for?

For riders, tuners, and teams who want to get more out of the TBI engine – without sacrificing durability, control, or reproducibility.

Whether for dyno development, racetrack use, or demanding off-road applications: The JB-Race Engineering ECU provides the technical basis to truly understand and purposefully develop the engine.