How to Remove the Speed Limiter on a HOWO Engine?
2 Answers
Professional personnel are required to use specialized software to access the engine's ECM for removal; it cannot be done manually. Below is relevant information about speed limiters: 1. Definition: A vehicle speed limiter is a safety accessory for forklifts/automobiles that can effectively control the driving speed without affecting the original vehicle power. 2. Main Applications: Primarily used to prevent speeding-related rear-end collisions on highways and violations involving industrial vehicles exceeding speed limits within enterprise premises. Speeding-related rear-end collisions mostly occur in medium and large-sized vehicles during transportation, posing safety concerns.
I've been driving trucks for over a decade and have previously considered removing the speed limiter on the HOWO engine, as driving faster on highways seems more convenient. Removing the speed limiter typically involves modifying the ECU control unit, which requires professional tools and software, such as reprogramming via the OBD port, but doing it yourself carries significant risks. The speed limiter on HOWO trucks is designed to protect the engine from overload, reduce fuel consumption, and ensure driving safety, especially on steep slopes or during long-distance drives where the engine might overheat. Unauthorized modifications can damage components, void the warranty, and may lead to penalties from traffic police for speeding violations. Safety comes first—I don't recommend doing it yourself. It's best to contact Sinotruk's 4S dealership or an experienced repair shop, as they can check whether the system allows adjustments or has official solutions for speed limiter removal. For daily driving, maintaining regular upkeep, timely oil changes, and inspecting the drivetrain can actually optimize performance.
