We have the superchips tow tune in our Excursion with a K&N air filter and the exhaust Y- pipe and it really perked the Excursion up. A friend has the 5- Star tune and he tows a 15000 5th wheel and he loves it. The only problem he told me about is that he is getting a free flow air filter and the Y-pipe also and he has to get Mike to update his tune.
2011 jayco 33rlds, 2002 Ford excursion, v-10, 3:73 gears 4x4 mine. 2008 Suzuki sx-4, hers. Retired Air Force, now Retired.