Stan,
I guess since the mod and the bikes themselves are still retively new there aren't a lot of them out there yet. As far as a review, I love mine and would do it again in a heartbeat. I think it made a big difference. I haven't dyno'd it since, maybe I should get one done soon before the white rain falls.
I have spoken with about 5 people that have done them and they all had positive remarks. And, if you do it yourself, it's not a bad investment or big cash outlay. A little more than my pipes cost actually.
