Here's my detailed review (as posted elsewhere as well):
Prior to the clean I had varying responses and recommendations ranging from "DO IT!" to "This new fad is pointless - the car needs some carbon to run healthy". Searching interwebz yielded no results other than claiming that the RS internals are better equipped to resist the carbon plague of direct injection engines. In the end, I decided to take both the S3 and the RS to George.
I won't comment on the S3 as the results have been consistent with the reviews posted before. The RS in short drives and feels much better! It starts up better, idles better and drives much more smoothly - is it a coincidence his nicksurname is Smooth?
The smoothness is more pronounced in Sport mode which has been notably fidgety with the sharpened throttle response and somewhat dilutive of the driving pleasure. The clean has appreciably smoothed it out to the point that it I love the drive in S (apart from the harshness of the ride on half the tar I drive over).
While I did expect the tiny dips and peaks during a WOT pull to be smoothed out, I didn't expect the improved spool-up and meatier middle-end grunt. This makes Normal mode so much better to drive too! I've always felt Normal mode a bit too lethargic and Sport a bit too fidgety and jumpy - like going from a basset hound to a Jack Russell. After damaging my cable on the same day as getting the car back, I haven't logged it or dyno'ed but my butt dyno and a clearly louder whistle from spool confirms the smoother yet stronger ride.
I haven't noticed any fuel consumption benefit but I don't care. My car feels so much better to drive and drive it I do (that could be why my consumption hasn't changed Wink). FYI I've noticed a 10-20% improvement here on the S3.
Lastly, I just want to note the superior service from George. We had a few complications on the S3 that meant us coming back and forth and me leaving the RS on Sunday, arranging with George to get a lift to pick up on Monday before I get to work. Late on Sunday night, I walk into my garage slightly inebriated after a lackluster Rihanna concert, and was pleasantly surprised that my RS was back home already. George pulled a rabbit out of the hat at the end with both cars! In the time I did spend at his workshop, he was always pleasant and I really appreciated the knowledge he shared and his sincere and full honesty.
George thank you sir. I hope you can impart not only your knowledge to your agents but your impeccable service attitude of doing a job perfect the first time in such a personable way.
For any of you guys considering a clean, don't listen to the naysayers - just do it!
Ex: 2007 Golf V GTI
Ex: 2004 Polo Hatch 1.6CL
Ex: 2001 Polo Classic 1.6
Ex: 2000 Citi Chico 1.3