My 2012, SL 350 ht DT XL goes 32kph and my range is over thirty miles. Resetting the speed limiter would reduce my range and probably void my warranty. I'm already faster than 99% of the bikes on the path, so I won't be playing around with resetting the programming anytime soon. Ebikes are struggling for a foothold in my city and speeding in the bikelanes would only make it worse. My aluminum frame, cro mo forks and Schwalbe tires are not rated for much more speed anyways, and I got two wheeled speeding out of my system after many years of motorcycling (and motorcycle crashing). If you want to go fast, buy a GSXR.
Secret to happiness: want what you have.