Thanks for this thread... Because of the positive information regarding the tune and drivability with the Sprintex 3.6 unit, I bought one today. I have a 2014 unlimited rubicon with an auto, so I'll be sure to follow-up with how well everything works. I'm pretty excited. I strongly considered a Motech V8 installation, but the price of the Sprintex made it a course of action worth exploring.

Speaking of the Ripp, I've read up on it and for a light weight sports car that lives in the upper RPM range, I think centrifugal superchargers are great. However, in a big, heavy SUV, I think the twin screw roots type blowers have a definite advantage. The off-idle power was a huge consideration for me. The peak power figures for the Ripp are very impressive, but not practical for my driving style.