I have a question.
Lets just say the bike is running slightly lean, your plugs look ok, your happy, the bike seems happy.
Now you take your bike over a high mountain peak, you are nearing the top of this 7,000 foot peak, the bike is pulling.
What happens to the head temps?
Um, they're probably going to go up since, well, you're climbing a ******* mountain...
You don't think the stock ECU can note atmospheric changes and adjust accordingly?
You're not going to look down one day and find that you've burned up your engine because you were running lean. It's a process that you should have been aware of far in advance of that. Running really
lean typically provides some level of indication that it's occuring. Pinging, properly known as "detonation", is really hard to ignore, especially under load conditions like you're mentioning above.
Mod your bike, check your plugs once in a while, listen to your bike for signs of detonation. If the mods you do cause any issues that have to be remedied with a fuel processor, so be it. But, that's the time to consider it. If you can follow that simple logic, you should have a great running bike for a long time.
Does anybody disagree with that statement?