The FuelX Pro+ is the premier performance fuel injection optimizer for the Yamaha MT-15 BS6 (2021–2023). While the MT-15 is known for its aggressive “Dark Side of Japan” styling and punchy performance, BS6 emission regulations often force the engine to run lean, resulting in muted low-end response and higher operating temperatures.
The Pro+ version unlocks the full potential of the 155cc VVA engine by providing 10 switchable maps, allowing you to sharpen throttle response and customize power delivery for urban sprints or highway journeys.
Key Features
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10 Switchable Autotune Maps: Includes a handlebar-mounted, backlit switch that lets you cycle through 10 fueling profiles on the fly. Choose “Economy” (Levels 1–3) for fuel-sipping commutes or “Performance” (Levels 7–9) for maximum torque and engine cooling.
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Handlebar Map Switch: A rugged, weatherproof interface that gives you instant control over your engine’s fueling personality without needing to stop or use external software.
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Real-Time Autotuning: Regardless of the selected map, the unit constantly monitors engine load, altitude, and temperature to maintain the optimal Air-Fuel Ratio (AFR) for peak performance.
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Smoother Power Delivery: Eliminates the jerky throttle feel and low-end flat spots inherent in the stock factory tuning. This results in a much smoother transition when the Variable Valve Actuation (VVA) activates.
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Cooler Engine Operation: By enriching the lean fuel mixture, the FuelX Pro+ helps the liquid-cooled engine run up to 10% cooler, which is essential for maintaining performance during high-RPM riding or heavy traffic.
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Plug-and-Play Installation: Comes with a model-specific wiring harness and OEM-grade connectors. No wire cutting or permanent modifications are required, making the setup 100% reversible.
Technical Specifications
| Feature | FuelX Pro+ Details |
| Compatible Model | Yamaha MT-15 (V1 & V2 BS6) |
| Year Range | 2021, 2022, 2023 |
| Operation Type | Manual Map Selection with Real-Time Autotune |
| Map Range | 10 Selectable Levels |
| Interface | Handlebar-Mounted Backlit Map Switch |
| Build Quality | Fully Weatherproof and Shockproof |
Why Choose FuelX Pro+ for Your MT-15?
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Urban Dominance: The MT-15 is designed for the city. The Pro+ enhances its “street-fighter” character by providing the punchy mid-range torque needed for quick overtakes and effortless filtering through traffic.
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Mod-Ready Performance: If you have installed a performance air filter or a full-system exhaust, the Pro+ is essential to ensure the engine doesn’t run dangerously lean, protecting your valves and piston from heat damage.
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Adaptive Riding: Switch to a high-performance mode for a weekend canyon run and instantly toggle back to a balanced mode for your weekday commute—all with a single thumb press.
Installation Note
The main module is typically tucked under the seat, while the waterproof map switch is installed near the left handlebar grip for easy access. Because it uses factory-original connectors, the unit can be removed before service visits to keep the bike’s original ECU history and warranty completely untouched.
