Join Date: May 2015
Location: Maastricht, Netherlands, Europe
I am only able to answer question 1 for you:
Yes, you do need a fuel doo-hickie if you don't want popping etc. with a new set of pipes and a K&N system.
All the recommendations I have seen and heard are for the Power Commander V for it. The nice thing is that you could even have 2 settings, provided you get the additional switch for it, one for long distance touring, with better gas mileage, and one for, e.g., cruising around town.
HTH, kind regards, Wim