Fuel pressure is fine and wideband is good as long as your foot is in the gas. The problem is when it warms up and you start cruising . There is no maintaining a steady speed. If you put the cruise on it starts bucking like a dam bull. I love my truck and the turbo is great but what the hell is wrong. I thought sure that would be the issue. Oh well. I still need to talk to Allen about ordering the HPT upgrade. I sure wish I was closer to Nelson Perf cause I'd drop my truck off and tell em to call me when its drivable.