Last year I bought a 2013 YZ450 as a "last years model", and I absolutely love this bike. Although I wanted the new 2014 model, to me, being 19 years old and an "average" rider, it was not worth the couple extra thousand dollars. I am not good enough of a rider to ride even close to the capability of this bike yet, so I have nothing to complain about. I've got about 50 hours on it without any issues. After setting the sag and experimenting with fork and shock settings I am amazed to how well the bike handles. So far I have put on a works connection glide plate and radiator braces, a lexx xc end cap (for spark arrestor to allow me to ride trails), primary drive x-ring chain, motion pro fork bleeders, and Emig lock on grips. So my question has to do with exhaust, shrouds, and tuning. With the Lexx end cap, the bike is pretty loud...too loud, So I was looking into a DRD slip on. Also, I was considering getting Cycra powerflow shrouds. I have a couple concerns with doing this: 1. Will putting both a slip on and the "better flowing" cycra shrouds require me to change the ignition mapping or will the bike be able to "self adjust" enough to the changes? 2. Are the cycra shrouds really that much narrower or slimmer? And it looks as if they have an air duct on the front leading edge of shroud, and I'm concerned with roost and water shooting into that intake, has anyone had an issue with this?