Anthony, (avc8130) on this forum does custom re-flashes and can do just about anything you want. The thread is
HERE.
This is an efi bike. You're not going to get more power to any significant degree. The aftermarket pipe won't change much of anything w/o removing the cat-con as well. Yes, he can smooth out and minimize the engine braking when you go off throttle. A lot of people seem to desire that. Read his thread, ask some questions there or PM him and see what he can do for you. He's generally pretty responsive and has been here a long time. Not in Canada, but that shouldn't be too big a problem really. The ECU is small to ship. Canada Post will do fine. He's done quite a few now so likely can suggest what works with the pipe you have and tweak it to meet your preferences.
I also asked how you ride for a reason. If you tend to be a brake in, throttle out of the corners kind of rider, you'll appreciate the flash more. A smooth, steady rider won't notice much difference at all.