[tabascobobcat]

Nice choice Brad.
The engine management system is continually adjusting the timing based on a number of parameters including the knock sensor. The intakes are just a tiny bit different allowing the MDX a couple of extra hp if both are running on premium. Same is true for the minivan too. Just means that it's ok to run regular unleaded in an MDX if you don't mind the lower hp. The 06' mdel has a few exterior changes involving the head and tail lights. Also has an "updated" tranny which should be a little more robust than the previous editions.