As far as Turtle's updates, I have installed everything except for the moon discs, which are going to Ecky. I 'm re-furbing them, so far the one beolw is the only one finished.
The Brake Regen button is awesome (pic of the button is on Turtle's page, right now it's just taped to the shifter, but will be shrink wrapped when I add the kill switch beside it). It keeps my battery fully charged, and is proving really useful for tailgaters. I hit the gas and that button at the same time and it's like a reverse brake check! The brake lights go on but I'm actually speeding up.
The clutch interrupt switch is proving kind of pointless since the Brake regen button kind of overrides the need for that mod, but it does its job well. The only complaint is that the driver (me) forgets to turn it back off at lights occasionally and realizes the car didn't auto-stop grrrrrr!
The one I'm on the fence over is the throttle smoothing circuit. It's definitely working, but I can't tell yet if it's going to give me any increase in mpg, which is the sole reason I bought it. If it proves pointless after a couple of tanks, it's getting tossed.