I didn't find anything quite like doing some searching. I noticed mine under light acceleration between ~1000 to 2000 rpm that it hesitates. The tach seems to jump up abruptly as you gradually accelerate. You can feel it, but it is not too violent. Just about all gears, especially noticeable in third (not sure if for anymore reason than that being a common gear putting around town). No codes, trans fluid level at max (not over max like I have read to do, yet). I am not certain whether it is transmission or maybe engine. If it is happening in pretty much any and all gears at a certain engine speed, I am leaning towards engine, but it just feels so much like a slipping transmission at low RPM. I can go WOT and get full boost, timing, and fuel pressure which results in normal performance. I do have my Livernois tune on (Race I think, hottest 2011 tune). I haven't been under the hood yet, just noticed it this morning coming in. It didn't go away throughout my entire hour+ drive. 107k miles.