canadian radrover controller madness, help

Hi, i was was hoping someone could give a helping hint or two . i am new to ebikes.
i bought a radrover for off road use in canada expecting to get a 750 watt bike, i found out the hard way canadian bikes are limited 500 watts the fact that i bought it for off road use doesn't seem to matter, so
does any body have any experience with these bikes?
what would be required to get the 750 watt potential out of this motor? a new controller? firm ware?

just to be clear i am not looking for increased top speed, 35 km is plenty for me, what i need is more hill climbing power .

I wasn't totally satisfied with the performance of my new Rad City, so I removed all the electronic/electrical but the battery from my 1 month old bike, and installed a 1500watt e-bike conversion kit. My bike is used on pavement and hard pack, so I went direct drive, but there's no reason a geared hub couldn't be done just as easily. For off road use, there are few limits.....

Plug and play install for the most part. Nothing the average DIY'er couldn't handle. Mine took me about 10 hours of old man style puttering. And very affordable in the grand scheme of things. Even with the price of the kit added to the original purchase price of the bike, I'm pretty happy with the value of the package - especially when compared to something even close to it on the open market. It's done my way now, has an LCD3 display for custom parameters, and looks like it came from the factory. Somebody will have a very difficult time seeing it's now got twice the original bike's power.

thanks, got a link?

I spent a lot of time researching on both Amazon and Ebay. There are endless choices. I ended up liking the LCD3 display compatible setups because they allow a lot of fine tuning (e.g. limiting max amperage draw) without getting into too much detail.
If you want super control over what you have going on electronically, you could check into systems that are Controlled using a CA (Cycle Analyst) display. The 2 displays (LCD3 and CA) are not interchangeable, so you need to make a call there early on, or go with a setup that doesn't use a display.

Here's a link to a note on another forum, that also includes notes regarding an 11 tooth freewheel that are pretty popular on the Rad bikes. Also, keep in mind I went with a direct drive hub. There are just as many gear drive hubs available, and it sounds like they might be a better call for your off road needs.

https://electricbikereview.com/forum/threads/2018-rad-city-conversion-to-kt-lcd3-and-controller-w-1500w-dd-hub-and-11-tooth-freewheel.24692/

Here's another link to help give you an idea of all the choices available. Note this is an older post-

https://endless-sphere.com/forums/viewtopic.php?f=4&t=60790

You could perform a shunt modification. That way you don't need to by any new components or program anything and just get more amps (= more torque) from your existing controller (and the rest of the stock components). Here is some information:
https://endless-sphere.com/forums/viewtopic.php?t=29097

http://www.pedelecs.co.uk/forum/threads/cyclamatic-controller-shunt-mod.8337/

Be careful not to put too much extra solder on at once. Go up in small steps and test ride the hills you need to conquer. At the top feel by hand how hot the controller and motor are. If you can touch them longer than 10 seconds you're fine. Good luck.