I have an '09 Ultra that was having some heat issues. I added an oil cooler, switched to Amsoil, added a Stage 1 air filter, and a Power Commander. The dealer that installed the Power Commander (and tuned it) also activated the Heat Management feature (where one cylinder quits firing when at idle and hot engine). 1000 or so miles later, now it wants to stall when I roll on from a stop after the heat management has kicked in. Today it also belched out some dark smoke from the air filter once when rolling on from a stop after the heat management had kicked in. Any clues what is going on?