Your 500 Watt rated bike is likely it's nominal wattage rating and actually able to produce up to 1000 watts (or more) at the highest setting under full throttle. Keep that in mind unless you're sure your setup is capped at 500 watts peak power of course.
I suppose this may sound like a sheepish question...but how would local patrol police and confirm your bike is more than 200 watts, 500 watts, etc? This is a general question that this thread has prompted me to ask those with much more experience than I dealing with this challenging topic to hopefully advise on.
The only guess I have is if you are operating a non-modified OEM bike, a person of authority could look up the bike/model and read what the published information about said bike.
Otherwise it's a bit of an honour system, no?
My LBS advised me on my DIY builds to have multi position switch and configure the CA3 computer to have 500 watt (legal limit here in my area) and 1500 watt (private land use, motor safe operating limit) so I could demostrate to someone the 500 watt limit on the computer display if I was ever questioned....but it's just a switch...
Thoughts and feedback? Thanks everyone.