Wow, thanks for the heads up. Raul @ FP was trying to seel me on his V-stacks pretty hard. I still may do the FP Tune, despite your good points, because I would have to take it to another dyno shop to re-tune no matter what--Factory Pro or not. Plus, I don't even intend on wanting to do anything else to the bike, accept perhaps to regear it down the road. So once it is done, it is done.
I may not get FP to tune the bike for me (well) without the stacks, because the way they worded it, they can only do a good job with the stacks. (Like I said, they were selling me hard on them). I'll talk to them on Monday and see what they can do, if I just went with the filter, my Yosh, and a tune.