I am looking at a truck for a friend. The truck is an 09 Chassis cab with a Duramax deleted. The truck is not fueling well under 2700rpms. I will most likely be retuning this thing with EFI Live. Now for my two part question, is it best to have the thing re-flashed with a Tech-2 and start from scratch. On the fueling issue do you guys know of a sensor that can keep it from fueling down low, it acts like it is a limiter problem. I have logged the truck multiple times and have noticed the truck will only run about 50% load from 1k to about 2700rpms then it will hit 100% load. I have checked desired rail verse actual and it follows right along. One strange thing I did notice is that it is logging 0% torque, I figured that my be do to the H&S programming.
Thnx
Sam