What's your squish? Cuz I bet it's huge.
How much spacing did you do under the cylinder?
I can tell you, you either are very very very detuned due to
Or you weigh like 100lbs.
Any normal adult person at 150lbs or over running a properly setup Athena is gonna easily see 450deg plus.
Idle at 280 and wot at 320? Yeah. Right.
A 40 deg difference between idle and wot is simply not possible.