What about the water in the IC, is that still a issue? I can't get that site to come up now. It's our stupid internet at work.
I haven't seen any recent complaints for the 15+ trucks. I'm sure some may have had problems but seems like mostly a non-issue.
Not the expert on these trucks have only had mine for a few months. Just did some research to see if I needed a can or not. I came to the conclusion that I didn't and mine doesn't have the PI since it's a 15 3.5.
DI is the driving factor. I don't know if PI helps, hurts, or has no impact. My hunch is it has no impact, therefore, the gumming up as a result of DI is still an issue. But, I'd love to hear that PI at least mitigates it to some degree.
PI should solve the issue (I personally don't think there is a real issue). The back of the intake valve is getting sprayed with fuel now to keep it clean. With DI only no fuel hits the back of the valve to clean it.