Well, I also spent some time today talking to Dan. He said the same thing; the Sato does make more power than the Arata and that Akro that he still has laying around. LOL I asked him about the Shorty can and he said that it makes less power than the standard size can on the K5. HE DID NOT TEST IT ON THE 10, so he couldn't say if the same would hold true. I am now starting to lean back towards the SATO TI OVAL system... BTW, that system only makes 4whp more than the slipon and the full system makes slightly less power than the slipon.
Another thing to keep in mind is that Dan has carried Sato for some time and probably put much more time in creating a map for that pipe on his personal bike (zx-10) than he did on that akro that he ordered. Also, his dyno testing wasn't done on an EVO2, so who knows how the EVO2 compares to the Sato?
I'll take one of each please and throw an TI-FORCE in their as well. LOL
05' ZX-10R (sold)
03' 954RR Titanitum/Black (sold)