I'm a new owner of a 2014 MX5100 HST tractor. Pretty much the perfect tractor for all my needs including blowing out a long driveway, cutting, raking and baling approximately 10 acres of hay and working in the woods. I have only one complaint and that's the position of the diesel exhaust port. Sucking back diesel exhaust is not particularly pleasant. I see two options. Extend a vertical exhaust or route the exhaust out the back. Challenges for either option, but given a little ingenuity, doable. The vertical option would add about 4 1/2 feet to the exhaust and the rear exhaust would likely add around 6 feet. Question is, would this lengthened exhaust create too great a restriction on the exhaust and possibly cause some engine problems? Would increasing the diameter of the extended piping be a good idea?