I bought the airbox lid about the week after I bought the bike but haven been able to put it on, just now finally go the flash since I was in Dallas and the dealership there would do it for $50. I ended up cutting off a lot of that divider that I assume is supposed to keep water from the front tire out. Wouldn't fit past the cable routing otherwise. I know everyone said it mostly just gives a boat load more torque, but I'm going to hazzard and say it gives some more over rev too. Pulls more mph on the top end. Saw 112 before I backed off, didn't wanna hold it so close to redline. Used to stop at 108. The torque is nice too though! I find myself accidentally giving more acceleration that I anticipate since my wrist is still trained to the previous setup. I am a bit sad it didn't do much for the under 3000rpm shudders. Still managed 47.5mpg on the interstate at 70-80 coming back.