Hello everyone. So, I would like to share with you my experience with new Bafang Ultra Max motor with WattWagons controller. I own 2 years old All Terrain Fat Bike purchased from M2S Bikes. That was my first ebike and I loved it. After this past winter, I start having problems were torque sensor (everything points to that) it was cutting out my assist. At the same time, I was looking to get more power from my original motor. I stumble on some article about new controller that I can get from company Watt Wagons. Knowing that my motor needs fixing (is anybody know where to get spare parts? so far, no luck) I decided to buy new one with the 2000 W controller (and display with programing cable, still not ready dough) I took a few long rides and I LOVE IT ! At first it took a little to get used to but now I am glad I got the upgrade. I am using DPC18 display and I found the best setting is using assist 2 on Eco. Sport is too powerful for joy ride on the flat trails. I like some workout Additionally, efficiency got better, I drove 30 miles with 48V 16 Ah battery starting 53.5V finishing with 49V left (I am 220 Lb. and the bike is full of additional stuff, like extra battery in case) The trail was mostly flat, and I did not used the throttle. I cannot recall accurately what I used up on old motor but for sure was much more, that is why I carried extra battery. So far, the only complain I have is that my front light is not working with this controller. I hope to get the programming cable soon, I am curious what type of adjustment I will be able to do. For sure I will look for adjusting torque settings governing level of assistance. Needs more fine tuning in my case. I hope this option will be available. Also, in the future I would like to replace the battery with 52 V. So, if you have an extra dough it is wort it, motor is more powerful and efficient. Thanks Watt Wagons!