Originally Posted by Audios
I always considered laboring lugging the engine, down low, high boost and cylinder pressures. Theyd probably prefer low pressure, high rpm over that.
Unfortunately, that very operating condition seems to be what the 10-speed auto trans tends to do. Motor wants to pull pretty brisk (good torque) even when around 2K rpm. Only way a 2,7 going to achieve that is if one or both of the turbos is boosting quite a bit? I believe that is how they are getting the fuel efficiency of 19/24, 22 combined out of this combo in a 4805 lb curb weight truck.
I'm just going to drive it fairly normal. Won't exceed 75% of max rpm rating, try not to lug it to the extent the transmission programming doesn't already lug it, and won't be hauling any payloads or towing anything first 1000 miles.