I apologize if this post is redundant but I wanted to post a simple air box mod being done on the Cross bikes on the VMC and one user dyno before and after. He got 3 hp and 9 ft. lbs of torque increase. The mod is simple. Remove side covers, seat and rear tank bolts. Slide tank back approx 3". In front of the tank you will see a U shaped rubber strip (looks like car door weatherstripping). Remove it and reinstall tank etc.
When I first saw this mod, I thought what a bunch of hooey. Until I did it on mine. (I do not have stage 1 or a power commander.) I have the stock air filter, a custom map and RPW exhaust. I was blown away. Lets just say my RPW's are happy to breathe! Snappier throttle, more torque, exhaust is louder. I went on a 500 mile trip today and I was like little kid at Christmas.
This was the best 5 mins. I have spent customizing this bike!