I finally had a chance to get out with my AVC programmed ECU today. I had asked for his 'standard' touring and sport map, which based on his prior comments I think should be basically 1/1 throttle/butterfly in T mode, and more zing than that in S. I had no interest in running the CJM, so I asked for that map to be whatever would smooth out the stumble the most.
All good news here, the fall on it's face stumble accelerating from a stop is GONE GONE GONE, smooth all the way. That was my biggest problem with the bike, as I have two other EFI bikes that are smooth and progressive, the felt like someone was throwing a boat anchor out every time I was pulling out in traffic. Anyhow, like I said, gone, it's how the bike should be.
T mode feels just like what I expected, linear all the way, smooth, no surprises, and none of the old marshmallow feel of the factory T. This map is probably what S should have been from the factory. I'm pretty sure I'll spend most of my time here.
S mode feels like a holley 4 barrel right on the verge of the accelerator pump kick all the time.
It's fun, it's aggressive. 80 MPH and redline happens in a blink. The bike roars like a 1200, much more effortlessly. I'll probably use this on the freeway, and when I'm in sportbike peg scraping mode.
Summing it up, I'd say that these T and S maps are what T and S _should_ be for an advanced/experienced street rider. There's a few miles of rutted, nasty gravel to get to any pavement from my house, and I feel fine in T. Someone who planned to actually be off-road on trails or dirt roads a lot would probably want the "lighter T", and this T as S. I may go that way myself after I have some more time with it.. we'll see if the grin wears off from the current S mode.