I put the Daytona Twin Tec on mine so far I'm pleased with it. Support from Daytona is tough. You want to be sure that you have read everything twice. My buddy and I did it ourselves and skipped chapters as we were going. Our first call in and they were not very friendly because it what we needed was spelled out very clearly in the insturction [smiley=oops.gif].
My only problem has been the cold starts. The closed loop system doesn't kick in until after 30 seconds and the mapping tries to overwrite some stuff. I know absolutely nothing about tuning but after reading their information I got pretty damn close.
I bought the unit from Kendall Johnson. When I took my bike up there for some motorwork Zach said I was pretty close and showed me what I was missing. Still have some fine tuning to do on the cold starts but other than that all is good. Zach Johnson has installed and tuned a number of these and can talk you through what you might need.
One of the things they've learned with the units that they've installed is that you don't even need to spend time on the dyno. The autotune portion will start right away. Hook it up, ride 10-15 miles, come back dump the data and go out and ride another 25 miles. Dump the data again. On mine I was running pretty smooth by then. Then you put 100 miles on it and dump the data. After that you go longer distances and download and check to see if its still making big changes. Once you get to the point where theres no big spikes you're good.
I haven't dyno'd yet, but I was warned to make sure you disconnect when you go in for a dyno test. The closed loop system will start to collect what's happening on the dyno and try to make adjustments.