Another update, but not quite as long of a gap as before.
Over 10k miles on the Ecopias. Still running the same pressures, 44/42PSI. Looking at my Fuelly log, it looks like they've cost me a couple MPGs. Hard to say for sure, driving has been different (probably worse for MPGs) since just after getting them.
Ran the full bottom grill block til a couple weeks ago. It was fine on flat highway, but temps would get pretty toasty on hills (coolant) and stop and go (intake). I removed the left half of the block and it seems to be doing much better even on 100F+ days.
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