With only 600 miles on my 4 door JK, I pull it out of the driveway today and begin driving away from my house. After approximately 200 yards my jeep looses power. If I put it in any gear and give it some gas or even floor it, the jeep just crawls at 2 miles per hour. I had to turn around and crawl back home. It is a 6 speed manual transmission rubicon and I am certain it was not in 4 low. The only mods that I have done to date are 3" lift, 35 inch tires, hypertech super chip and banks exhaust. The jeep was driving perfect until now? Any idea what could be going on?