Butt dyno feels good so far. I'm sure I'd notice it even more if I wasn't so nervous about pushing it without a tune. Everyone tells me it's fine as long as I don't try to race a Lambo or something where I'm pushing it for an extended period, but I'm still nervous.
Got the base readings done, but haven't bothered to look at them. They run a Mustang dyno, so their numbers always come out low. That does me no good until I can get the 'after' dyno to go with my 'before' one.
Keeping my fingers crossed that UpRev is speedy and I can get this done soon.