Is the BM3 Tuning Stable?
2 Answers
BM3 tuning is not stable and may lead to engine damage. Below are specific instructions regarding BM3 tuning: 1. TU Engines: If the engine is a B48TU, it is not recommended to install BM3 tuning, as the air-cooling system of the B48TU is inferior in performance compared to later water-cooled versions. 2. Water-Cooled Engines: BM3 tuning can increase power by 46%, which means the engine generates more heat. Without modifications to the cooling system, engine damage may occur. For water-cooled B48 engines, installing a Stage 1 BM3 tuning is relatively safer.
I've personally used BM3 to flash three BMWs, and the overall stability has been quite good. The program runs smoothly, with rare crashes or freezes, as reliable as a smartphone software update. However, you need to pay attention to compatibility during version upgrades—new models adapt quickly, while older cars might encounter minor issues like unsaved settings or false temperature warnings. I remember once accidentally flashing the wrong firmware, which triggered the engine warning light—gave me quite a scare, but it returned to normal after a reboot. Regularly backing up the factory program is a must, and the tutorials shared in the community have been a huge help. After long-term use, it feels more stable than some similar tools, but unofficial modifications always carry risks. I recommend beginners start with lower versions first and avoid rushing into high-performance modes—safety first is the real key to stability.
