Angel of Attack wrote on Jan 1^st, 2022 at 12:54am:

Thanks for share the data! Just make a correction, N1 doesn't goes up and down with ATM as actual temperature. Once you use ATM over refTemp, N1 always lower than what current temp's N1 would be. For EPR controlled Engine like PW and RR, you only need to get EPR, and let EEC to tell what N1 should be, but for N1 controlled engine like GE/CFM, there is a more complex 3 tables (on 737 at least as I know) to look for correct N1 (I guess that's why it doesn't work well on the 767GE expansion, though I didn't bought it so can't tell)

Thank you!

That N1 box is more as a reference to what expected MAX N1 should be for a given reference temperature and pressure altitude, as of course EPR is the main thing we're aiming for. It's just there as a reference! Maybe I should take it out completely as it's a little irrelevant. But since I'd love for CS to change the N1 values to reflect 2037 vs 2040, maybe I should keep it? Currently not only EPR but their N1 values for the 2037 and -535E4 are wrong.