How to remove the power limit on CB650R?
2 Answers
To remove the power limit on the CB650R, simply replace the ECU with the original Thai version. Additional information: 1. Power: The new 650cc inline-four engine delivers strong low to mid-range torque, with 64kW peak power perfectly balanced with low fuel consumption, ensuring agile and smooth handling whether on city roads or more challenging routes. The diamond-type steel tube frame, paired with an aluminum rear swingarm, enhances overall rigidity. 2. Features: The LCD dashboard clearly displays all vehicle information. The street-style handlebar design ensures comfort even during long rides. The 17.3L large-capacity fuel tank provides a range of 21km. The side fairing, combined with the multi-angle headlight, gives the bike a sleek overall appearance. 3. Design: The thick and spacious seat, with an 810mm seat height, offers a comfortable riding experience. A storage space under the seat is provided for riders to store personal items. The LED taillight ensures better visibility at night. Dual disc dual-piston caliper front brakes and single disc single-piston caliper rear brakes, along with the standard ABS anti-lock braking system, enhance overall safety performance.
Back when I rode the CB650R, I was also curious about how to remove the power limiter, mainly because its output was detuned from the factory—for example, the European version only had 95 horsepower instead of the full ~100. I tried unlocking the limiter myself by reprogramming the ECU (the bike's main computer) using aftermarket tuning tools like the Power Commander, but the process required caution: disconnect the battery first, connect the device to load the full-power map, then reboot. It wasn’t too hard, but here’s the catch—after the mod, I noticed more power came with higher fuel consumption, and it also made the bike easier for police to flag as non-compliant. Later, I wised up: I don’t recommend beginners attempt this themselves; it’s better to go to a professional tuning shop, as they can ensure safe adjustments without damaging the engine. By the way, the upgraded ride feels much more thrilling, but always gear up properly to avoid losing control—safety first! Also, modifications void the warranty, so new bike owners should think twice.
