Once again, my 2 cents...
Seems every time I post anything about the Power Commander I get other members panties in a bunch, but oh well. It wouldn't be a forum if everyone agreed with everyone and didn't at least try their best to disagree or make another member look like an idiot.
But anyway, once again: I had my Honda dealer install the PC3USB before I added anything else. Their mapping job totally sucked. It ran worse than it did when I rode in in to their shop! So after a couple weeks I took it out! Then when I replaced my stock mufflers with Yoshi's I felt a bit of a need for a new map. Local techs and friends told me I needed to remap it too. But I noticed the only maps I could find on the enclosed disc and even on DynoJet's site were for Two Brothers and Erion cans. None were listed for Yoshi. So I called Yoshimura and they suggested I go ahead and use the maps for TwoBros. But before I got a chance to remap it, I replaced my Y-Pipe with an OEM earlier model without the cat. That, in the opinion of all my local bike friends and bike racers I spoke to at the track, would increase flow a bit and would require remapping (aboujt 483 WT members disagree, but oh well).
I reinstalled the PC3 myself and when I finally got around to remapping it. With barton664's help over the phone as to what to click on, I tried the map for the Two Brothers map but found it didn't really work that great. A couple days later, I remapped it to the Erion map and noticed a huge difference! I kept this map until I installed the K&N air filter.
After still feeling that "something was missing" in the lower end, I called DynoJet and they made some adjustments to my rpm's up to 3,000 and turned on the Accelerator Pump Feature. For all you kill-joys, you'll notice I did NOT say that DynoJet "mapped it remotely". Didn't need a new arguement started like before. So anyway, there was a huge difference. But people riding behind me were telling me that every time I cracked the throttle at any speed to pass a car or something, small puffs of black smoke came out. I even started to notice black sooty spots on my bikes tail section (lights and fender). So I turned off the ACF and no more black smoke puffs! And it still runs awesome!
So my current map is basically just the Erion map with a few tweeks to the rpm's up to about 3 grand. I shared it with another guy with a 919 with Yoshi's and K&N and he loves it! He said he also noticed a difference. As for specifically finding a map for Yoshimura cans, no cat, and a K&N it seems there just isn't one out there that I can find.
So there you have it. My map story, and I'm sticking to it! And I'm sticking to the current map. It seems to do fine, and already cost me enough for the PC3 plus the LCD Unit (on top of all the other crap I've added) that I have no immediate plans to rush out and pay someone $300-500 to put my bike on a dyno. I'm not trying to produce a rocketship on steroids. Just a bike with a wee bit more power off the line. Seems I got what I want now. Several WT folks have talked me out of the 16 tooth sprocket because I'm not a fan of power wheelies.