How to Remove the Speed Limiter on an EFI Motorcycle?

[EzraLynn]

With the ignition switch turned off, turn the throttle grip on the right hand to its maximum position and then pull the brake lever to its maximum position. With the left hand, turn on the ignition switch, then release the throttle grip and brake lever on the right hand. After turning the throttle grip on the right hand to its maximum position and pulling the brake lever to its maximum position, turn on the ignition switch with the left hand and then hold the left brake lever. Quickly turn the throttle grip on the right hand to its maximum position and release it twice. To remove the speed limiter, the rider needs to reprogram the ignition curve to unlock the speed limiter.

[EmersynDella]

When I used to modify fuel-injected bikes, I tried removing the speed limiter. The speed limiter on fuel-injected motorcycles is mainly controlled by the ECU unit. Some people flash the ECU program to modify the speed limit parameters, but this requires professional equipment and software. Doing it yourself can easily brick the system. Others install high-flow air filters and straight-through exhaust pipes to improve engine intake and exhaust flow, allowing higher RPMs and indirectly breaking through the speed limit. But honestly, after modification, the bike tends to overheat, fuel consumption doubles, the brakes can't keep up, and going too fast is extremely dangerous. I stopped doing this later.

[McAmir]

When it comes to removing the speed limiter on fuel-injected motorcycles, there are actually quite a few methods, but none are recommended. Some people modify the throttle position sensor to trick the ECU into thinking the throttle opening is still small, when in fact the throttle is already wide open. Others install aftermarket ECU tuning boxes to override the factory settings. But honestly, manufacturers set speed limiters to protect both the engine and your safety. I've seen modified bikes where the piston punched through the cylinder wall - the repair costs could buy a new bike. Nowadays, when riding mountain roads, I prefer using stock bikes for cornering - it's safer and more worry-free.

[LeRosalie]

To remove the speed limit on an EFI motorcycle, common methods include flashing the ECU or modifying hardware. For ECU flashing, you need to find a shop specializing in motorcycle modifications to rewrite the program via the OBD interface and raise the RPM limit. Additionally, installing larger injectors or high-lift camshafts can partially remove the restrictions, but they must be paired with ECU tuning. However, this approach will void the warranty and fail vehicle inspections. I was tempted before but later realized that a 120 km/h limit is more than enough on national highways, so it's not worth the risk.