I always wanted a jeep so I recently purchased a 2007 2dr jeep jk manual transmission with 47,000 miles on it. I've only had this vehicle for roughly four months. I've always heard that jeeps were slow and I have no problem with the speed. I just feel it runs sluggish when taking off from 1st and 2nd. I've also noticed if I go over 3000 rpm's in those gears my engine seem to run/ rev very hard. If I drive it like I'm cruising it drives fine. I have cleaned the throttle body, and I have also used a fuel injection cleaner. Does anyone have any suggestions on insight for me the jeep rookie.