For those thinking about a stage-I, II reflash: Save your cash.
Dealer's reflash only adds enough fuel and timing changes for the mods performed, to get you back to 14.6:1. The MoCo ECU flash is not a tuning solution for adding more fuel and gaining performance. It makes a modded bike that's too lean, run rich enough again to get back to where it was, BEFORE you modded it.
Yes, a PC(V) is something you can add on, and tune at home with your laptop, unless you have a Home PC in your garage. I've used them personally, and they're easy to use. If I can use one....your dog can.
It allows you to ADD fuel, change the a/f ratios to 13's for cruising and 12's for WOT. For the change of exhaust, air cleaners, cubic inch enlargement, cam changes, you can go back in yourself and make the changes yourself. It's a piggy-back, programmable computer that adds to the stock ECU settings, from it's little brain, extending injector pulse time and fuel delivery.
The issue I have with the SERT units, (Or any SE unit) is that the unit, cable, software and introduction CD (which is a "How to" CD that's strongly recommended) is ALL SEPARATE PARTS, and all have to be purchased to do the job. It does, however, seem to have less of a failure rate then the SERT, or at least it appears that way on Harleys. SERT units also mate with the ECU, and once installed, can not be placed on another bike, unless the ECU accompanies it.
The Dyno run is optional, IMHO, if you don't care if you're getting every sliver of HPs out of the engine. If the air/fule is mapped for your add-ons, and it has a runability issue, then you know the mapping needs to be re-downloaded, or something's not right.
Dyno runs are a tool. They're not the save-all, nor are they worthless, but you need to keep things in perspective, and know what you want, and more importantly, what you need.
“When the going gets weird, the weird turn professional....” ~ Hunter S. Thompson~
R.I.P. Rubberdown. 1971-2012