Mechano:
I agree with your statements completely. All of us here don't race and never will. It's just that your opening statement didn't reflect that:
"Just a technical question.
Due to many experience in past I've seen that on many bikes remove completely the airbox is not better than study a good airbox modification.
I've seen lot of dyno charts showing same or better performance modifying the airbox instead of removing it and using pods in front of the carbs."
No airbox will always make more peak HP than a stock airbox, there is no denying that fact. Of course, none of us here need peak HP, we need ridability. But we dont seem to let that stop us from trying to attain a few more precious ponies.