I spend way too much time on the gm tech forum (of which I I am one, for a while longer anyway!), don't think I brag about that system over there!
Many AMF/ DOD lifers fail before the 1'st oil change. Wound seem to be a manufacturing issue as failure rate much lower from 2017 to around 2020.
My design is relative to magnetics and component weldability related to the GM GDI pump fill valve. Prior designs were bolted on and newer designs are laser welded. I dealt with the design flaws that were involved with welding 420 stainless steel to 17-4 (and 420 to 420). Redesign of the valve body allowed to welding 17-4 to 17-4 (no issues with root cracking, much easier to weld).
You have 2 sensors above the throttle plate in your image. One looks like an IAT and the other looks like a standard GM MAP sensor, but MAP is
generally measured between the throttle plate and the cylinders. What are those sensors?
IAT sensor and AP are both above the throttle plate. The throttle body on my base system has the MAP above throttle valve, so I carried it over. Referencing it after throttle plate isn't an issue as it can be plumbed to do this.
