I didn't see anything on here about Spintex supercharger, looks like the install is straight forward and power doesn't seem to bad, and you can retain the factory intake to maintain the stock systems water resistance. They have dyno charts, but they don't look anything like what are posted for the other performance mods on here. Price seems to be in line with the others. Here is a link to there website

http://sprintexusa.com/jeep-jk-wrang...-v6-pentastar/