CM871 to CM570 swap

[Doops22]

CM871 in my 2010 Kenworth was eating antifreeze, hydrolocked after sitting for a long weekend, I assume a dropped liner or bad head. I pulled it out and dropped in a CM570 signature 600.

I talked with Kustom Truck and they told me it was a straight forward swap, just buy our harness and you’ll be good to go. I put their harness in and got everything hooked up. It started right up but is running rough. Showing codes 378,394,396,398; all circuit codes for the fuel actuators. I talked to Kustom again and was told I need to change some settings in my CM570 ecm to let it talk to the truck.

Does anyone know what settings I need to change? I don’t have insite but have a local guy that does, but he has never done a swap like this. Or know a place that can maybe do the settings remotely? Thanks