Before you keep reading this article, you should reference this article on programming the BBSxx as there is lots of information on the cable and the quirks of the programming software.
To program the Ultra Max you simply need the same programming cable as you would use for the BBSxx series drive. The Ultra Max comes with everything you need to get rolling except a custom bike frame
#Pedal relearn option snap on modis ultra how to
This article is about understanding the programming for the Ultra Max and understanding how to change your programming to get the most fun factor out of your drive unit. Bafang has released a new beefy drive unit that can run at a variety of voltages with no speed limits and that programs using a similar cable and software as the BBS02 and BBSHD. With the 1000W nominal Bafang Ultra Max drive unit all that has changed. Many of these defeat devices plug-in between the speedo and the main drive unit and halve the speed that the drive unit thinks you are going at (so when you are going 20mph the drive thinks it is only 10mph).
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The most frustrating part is that often they have built-in speed limiters that you have to install special defeat-devices to overcome. The one thing that all these ‘low power’ drive units have in common is that there is absolutely no way to program the drive unit to do anything much other than what it is set to do from the factory. There is half a dozen low power torque sensing mid drives on the market right now that advertise themselves as being between 250 and 750 Watts.
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