OK, I’ve been reading all the Posts about the performance enhancements available to add a little oomph to an already great performing truck. I guess I’ve almost convinced myself to jump on the wagon. I have a 39.5’ 5th wheel Toy Hauler that weighs between 11,590 and 16,110lbs according to the manufacturer data sticker. I just got back from a trip & the total combined weight was 24,340 lbs with a full tank of fuel. I’m seeing that the addition of a programmer/tuning module will minimize or eliminate the downshift while pulling certain grades. I’m not sure what to go with but I’ve been told that if I stay with the EZ, I won’t have to add the pyrometer or change the exhaust. I would probably add the pyrometer anyway to keep an eye on EGT’s while pulling that much weight. I don’t necessarily want to change the stock exhaust; I like the “quiet ride” that comes with it (unless someone knows of an aftermarket one that is just as quiet of course). I’m not trying to heat the meats at every stoplight, but I would like to make some of the downshifts go away with a minimal amount of modifications. I’d like to hear from people who have tried to achieve the same results with minimum mods, all comments; pros and cons will be greatly appreciated.