I have been reading around and looking at the air box design, what I have read and I could be wrong but I figure it wont cost me anything to try is to make a spacer that will increase the volume of the air box a buddy of mine has a CNC in his shop and said he would cut me the spacer if I get him the dimensions or bring him the air box so he can put it in AutoCAD for the CNC don’t know if what I read is true but there is enough room to raise the box 0.4 inches I was going get the Factory Pro Velocity stacks and a pc3 tune the bike on a dyno first see the curve then install the spacer and check it again, and see what the difference is if any, I know this could be a total waist of time but I like plying around with ideas especially when they don’t cost much lol