I have an 08 SEUC and had the engine enhancement done last fall with 8800 miles on the clock. This bike is bone stock and I have had no problems prior to the enhancement. After, I experienced upper valve train noise. Took it back and I believe they relieved my rocker boxes which helped some. Currently 13500 on the clock and I still think there's excessive valve train clatter. Running Syn-3 in all holes. So far, no leaks before or after the enhancement. I was more worried about the CRs. Prior to the enhancement, I was having some starting issues. Not always, but a few times, it seemed as the starter was working harder than it should need to. Still the best ride I've ever had. She's a keeper.
DCC