Information on changing outlet nox sensor

[FnG92]

Thanks a million. I have quickserve and soon the rest of the equipment I need. I love this place so much. I'm beyond excited right now. When I get paid it's the first thing I'm buying. Once I financially recover from my last repair bill I can look at going to the dealership for a factory version of my ecm program. The issue I'm having is that my truck doesn't like to drop a gear and climb at 1500 rpms and I'm really hoping it's some aftermarket programming to try and save fuel by limiting rpms. I can only go above 1500 rpms when in 10th gear. Am I stupid?