I now have 10 hours on my 2015 XMR 800. I decided that I would run 87 octane for the break in period as that is what the dealer filled it up with anyway. I normally run 91 Octane in most of my vehicles(Non-Ethanol 91).
I can tell you guys that absolutely I need to run higher octane gas then 87.

I’ve noticed that the bike has backfired on a few occasions and there is audible detonation under a heavy load. Most people don’t know what detonation(Pinging) sounds like but I certainly do. I also think that they may have leaned the motors out for the 2015 models in efforts to lower emissions, I think this is why a tuner is now picking up so much power compared to years past. I’m going to try and run 91 Octane as I’d rather not run a fuel programmer since the bike will be on warranty for quite a few years.

Anyone else with this model bike notice similar things?