Hey, I'm trying to solve a throttle drop out issue on my 2009 ram. I'm running a 92mm hellcat TB on a ported 6.1L intake manifold on a new 426 and if I'm cruising at highway speed it throws the ETC and puts it into limp mode. Initially I had a pedal code but I believe it was a stored code from when I did a start up with the pedal disconnected and after clearing it it has never resurfaced. Initially I thought it was pedal related since I had an aftermarket TCM tapped into the pedal but I've isolated the signal and the problem persists. I've changed to a stock throttle body and there's no change, issue still happens and I've chased every mechanical possibility.
The issue does not exist on street driving but as soon as I get on the highway and cruise for about 5 minutes with minimal throttle input it'll throw the ETC and drop throttle control. A shut off and restart clears it and it'll happen again in another 5-10 min down the road.
Attached is the tune and a datalog of the drop out, around 6 minutes into the log.