level kit install
So I took my 2013 f150 4x4 to have a 2-1/2 rough country leveling kit put on. Went to pick it up and when I drove it had a loud roar like I had mud tires on it. Took it back to the shop and they put it back on the rack. We noticed the left hub was lock. They checked the vacuum to the lines visually and everything sounded like it had suction to the iwe. Would this cause the roaring noise if the iwe was not working? And also why would it go out all they did was unplug it for the install. It was the end of day Friday so I left it. Didn't want to damage anything driving it. They are going to re examine everything first thing Monday. Any suggestions or input. I debated on putting this kit on I sure hope I didn't ruin my new truck.

