I originally had my Madmods Scrambler in Florida and it was great; 30mph easy...but Florida is flat as can be. I have it in Pennsylvania now and it is woefully underpowered. At 30 amps & 100% power I have to gear down and pedal hard to get up even moderate hills. It definitely needs a more powerful motor. I have tinkered with all the advanced settings to no avail. I wonder if a Bafang 1500w mid drive would fit? Other than that, I may try a 1000w Bafang geared rear hub motor if the spindle width will work. I wish Sondors would offer a motor upgrade.