Hi all,
I went with the KMS tune as well. I liked the idea of having the stock ECM to fall back on if I ever needed it. I ordered the stage 2 (apparently they don't have a stage 2 anymore, but they did when I ordered it!), but I received a stage 3 about 115HP. For those wondering, the difference when driving is...well... unbelievable... If you take delivery of the Roxor with a tune already installed, you won't ever know the difference. If you drive a stock Roxor and then install the tune, it's night and day difference. Way back in high school I had 2 friends that owned firebirds, one had a V6, the other had a V8. These Roxor tunes basically take you from a V6 experience, (it looks cool and it'll get you where you want to go) to a V8 experience (Wow this is pretty fast). I've only got about 50 miles on it since installing the tune, so I can't comment on longevity, only the instant HP increase once I took it for a drive.
I asked KMS specifically about the clutch issue and the toll that the new tune might take on the engine, and they said that they have not had anyone inform them of any problems either way. I'm not saying that there won't be, I'm just letting you know what they told me when I specifically asked about these issues. I guess we are pioneers here, we have to let each other know if we have problems with this stuff, otherwise it's just speculation.
My Roxor couldn't even use a 5th gear until I got the new tune. I could uncomfortably cruise along the road in 4th gear at 2k rpm's and not be able to go any faster. Now, I have no idea what my top speed is, and I don't care. I do know that I can drive the speed limit on the road near my cabin, at 70 mph on my way to the trails!