Just came back from my first ride on the 05. I have made the following mods. JD jetting, blue needle middle clip, 170 main, 48 pilot, starter jet 65, pilot air jet 80, leakjet 50, ZipTy fuel screw 1 1/2 turns out. Snorkle removed and side windows cut out of airbox, NoToil filter. Throttle stop cut. Exhaust restrictor removed. Todays ride was about 60 miles at Georgetown, California. I did a short 1/2 hour ride to break it in and then mixed it up with technical trails and high speed fire roads. I was very impressed with the JD jetting, much more snap than my 03 (which I thought ran great). I had bumped the pilot jet up to a 48 and it starts right away. The only backfiring was at throttle full off on deceleration and even then it was only very slight. I think it may come from the air injection pump. The suspension was stock set up. I'm 235 lbs with my gear on. The feel of the bike was lighter than the 03 as it was easier to loft the front end. The forks are stiffer and were a little harsh in the technical areas. On the fire roads and jumps, the suspension package worked well. I measured the sound level before leaving my shop at 97db but that was on a concreat floor. The cut airbox puts out a bit of intake noise as well. Overall I was pleased with the engine and jetting performance. The suspension will take some fine tuning after the springs take a set.