Inside mods. Eliminating the Servo along with some other air flow restrictions but not gutting it. There was a concern for a tinny sound if gutted. Once David gets some more ride time he should be able to report if it has smoothed out his stumble issue.
We should all hopefully here it in person at our next Latus meeting.
I am trying to get David to do a Dyno to see what the plot looks like. I am sure it improved power. You can put pretty much put anything on an XB and improve it over stock.