Thanks. Trying to decide where to go next. I have a laundry list of must-dos, but not an unlimited budget. Do I spend the $2k+ for tunes and exhaust (improved mileage, no DEF, no Pemex worries), diesel generator, air bags and on-board air, or??? I'll probably go the cheapest route next and do the air bags and air. To clarify, I'm talking helper air springs, not a full-on air ride suspension. I like air ride (had it on a former rig), but if there's a failure, you are dead in the water. No bueno when at the bottom of Baja.