OK..here's my story..My 2013 VT with only 8,000 miles on it would completely cut all acceleration (not stall though) when the RPM's were between 4-5K (basically defeating the whole purpose of having a turbo). Brought it to the dealer and they replace a sensor of some kind and that didn't fix it. So, they tell me they have to order a diagnostic tool in order to perform a certain test. 2 WEEKS later the tool comes in. They call me and say that the problem is the fuel pump. They replace it. Didn't fix problem. Finally, they call factory and factory advises them to replace fuel line(s). They replace fuel lines. PROBLEM SOLVED. They had my car for 28 freggin days! If this happens to your VT, let your dealer know about this post..it could save a LOT of time, money, and hassle!