Just wondering if anybody has personally modded their air intake. I have seen XL's with fairings removed and the air box removed, with 2 K&N mini cone air filters strapped directly to the back of the carbs, but this is only from pictures. Is it that easy? Do I need to cut a hole under the rear fender to force more air in? Do I need to re-jet after this? Any help would be very much appreciated, looking for fall/winter projects. Also interested in removing the crankcase blow back emission system if anyone knows about that. I've seen pictures of that as well with a K&N filter in place of the emissions system. The problem with that is the K&N filter has a line in and line out, where as the OE system has line in, line out, and a drain. Any know how? Here are some pics of the bike now. Just put the full XR's only exhaust on, cleaned up some rust on the swing arm, painted the kick stand, and waiting on new mild knobbies to be mounted (hopefully today); just some basic stuff without having to crack the motor open.