How to Remove the Electronic Speed Limiter?
4 Answers
In most cases, the default speed is set at 30km/h, and the speed at which this key is pressed serves as the trigger point. When not in cruise control mode, press the LIM key, then press the SET key to activate the speed limit adjustment. Use the "RES/+" or "SET/-" buttons to adjust the speed value. When the speed limiter is activated, the throttle depth does not exceed 95%, and in most cases, it will not exceed the set speed limit. If the speed exceeds the set limit, an alarm will sound.
Last time I helped a friend look into this matter, the electronic speed limiter is mainly designed by manufacturers to prevent speeding, and directly removing it is not very realistic—safety comes first. However, it is indeed possible to adjust it by flashing the ECU program, which requires connecting professional equipment to modify the parameters of the vehicle's computer and raise the speed limit value. The operation process must be handled with extreme caution. I remember an experienced driver told me that after he had it flashed at a tuning shop, the engine warning light stayed on constantly, and he eventually had to pay to revert it. If you really want to remove the speed limit, I suggest finding a reliable tuning shop and using genuine software for the operation. Otherwise, damaging the transmission would be a case of 'penny wise and pound foolish.'
My friend who's into car modifications keeps asking me about this. In reality, there are typically three ways to remove the electronic speed limiter: The most thorough method is flashing the ECU program to directly modify engine output parameters; some people install external devices like throttle controllers to trick the vehicle computer signals; or modify the instrument cluster wiring. But each method carries risks - I've personally seen modified cars overheat on the highway after removing limiters. Factory speed limiters aren't set arbitrarily - transmission cooling, braking distance are all speed-matched. After unauthorized removal, tire grip often becomes insufficient. If you really want speed, you're better off buying a proper performance car.
To be honest, from a technical perspective, removing the electronic speed limiter is equivalent to forcing the vehicle to operate beyond its designed limits. Currently, most vehicle speed limiters are implemented through the brake control system, and removing them requires altering CAN bus signals. I've personally tried connecting a diagnostic computer via the OBD interface and found that parameters in the transmission control module can be modified, but this causes malfunctions in the ABS and ESP systems. The last time I saw a car with its speed limiter removed at a repair shop, its brake pads were wearing out twice as fast, and there were quite a few cases of wheel hub deformation. It's not that it can't be done, but driving afterward becomes a nerve-wracking experience.
