As mentioned, how long do you run at wot, if its for 10 seconds it will be fine, if its for 5 or 10 minutes you might want closer to mid 11's. Also, your cylinders may vary, one might be at 11.2 and one might be at 12.0, you are seeing a average of one side, if you do have a hot cyl and you lean it out too much you know what will happen. I have been running a blower motor in my boat for over 10 years, I have never melted one down yet but always set my afr's in mid 11's. Another point you made though was you are only running 3-4 psi of boost, if you decide to lean it down it will not be as much of a chance of meltdown with that low of boost. Drop your wot fuel pressure slightly until you see afr's a touch higher, stop and pull 5/7 plugs (the ones I think I remember hearing are lean the most) and see how they are looking , good luck, Smitty

I'm not a fan of changing fuel pressure to adjust AFRs. To me it's a global change / band aid. I like to get the base BPW/MAP tables set, then use the other global change tables to adjust AFRs as needed.

Ditch the rising rate regulator if you have it and do as Griswald mentioned.

For reference I run 12.5-12.8 WOT but on a N/A motor.

I too would be interested in seeing the fuel MAP with an 80 lb injector, specifically at or near idle / no load.