Well, I've had my new Dynojet Power Vision(used in conjunction with my existing Auto Tune module/wide band O2 sensors) for a couple of weeks now, and overall am really pleased with it.
Had a few user issues initially, as I'm not all that savvy with a PC, and I don't think the manual is laid out very logically. No matter as Jamie at Fuel Moto has the patience of a saint, and endured my numerous calls & questions, and got me lined out.
I've done about a dozed data logging sessions, and tune calculations, and the corrections have become well under 2%, and generally less than 1%. The last two runs had virtually no spark corrections, so I think the tune is getting close.
The bike runs better than it ever has, and has excellent throttle response. Also seems to run quieter and smoother, and is cooler than ever. Oil temp hasn't exceeded 220F since the install.
The only downside so far, is a definite drop in fuel mileage. I haven't done any really long rides to quantify it yet, but just ball parking it, I'd say I've lost 6-8 MPG. I have the desired AFR set to 13.0, and I may have to bump it up a few tenths, and try to find a happy medium between power and fuel economy.
Damn good product IMO, and glad I did it.
2009 Vivid Black FLTR/120R/Dewey's headwork/TMan 625G/Fuel Moto XXX 2/1/2 w/4" mufflers/HPI 55