2021 Ram 3500 H.O.

4x4ord wrote:
I should get some sort of idea as to what it takes to overtax the 2021 Powerstroke’s cooling and egt this spring. It would be kind of nice to have some kind of gauge that would tell me when the truck is in derate. What would you recommend?

Edge Insight CTS2 or CTS3. Set the PID's to monitor post turbo exhaust temps(since it doesn't have a pre-turbo pryo), commanded fuel pressure, and actual fuel pressure. If your commanded starts to go decrease at full load, then you know it is defueling. Other PID's that will make it defuel or cause high EGT's and are worth monitoring are barometric pressure, turbo speed, charge air cooler temp, and manifold pressure.

The Insight will also tell you when you are in regen along with the different temps and pressures at different stages of the emissions system. It might even tell you when the EGR valve is open and how much along with turbo vane position, but I am not 100% sure that it shows this on the Ford's like it does on the Ram's.

I hooked my CTS2 up to my father-in-laws 2019 F350 and saw it defuel as temps got hot towing cattle. There is a way to see horsepower, but it is not 100% accurate, however, it is good to use as a tool to see if there is any change in max power output with different mods or at different temps/altitudes.