I currently ride one. I highly recommend a good vent kit because front mounts run HOT. Also heat tape everything near the turbo so you don't have melted wiring. I haven't had any serious issues with mine. The first ride out I lost the coolant hose that comes off the turbo and couldn't find a viable replacement. The only other issue I had was detonation at WOT - fixed by replacing the plugs. It was confusing at the time because I was only at 10lbs on 110 race fuel.
The thing I really like about the kit is the ability to swap from 10lbs to 15lbs in all of about 10 seconds with the ADA/EBC. Also the BD box logs all the max numbers you hit, so if you don't have a chance to look down during a run you can check the box to see where you are at.
My main dislike is with the trail tank. Mine is a first gen and the fit is TERRIBLE.