I dynoed (dynapack) my car to 470WHP/620WNM @ 1.4 bar and 340WHP @ 0.7 bar
And recently tried the dyno feture on the emu, showing 460WHP / 637WNM @ 1.3 bar and 353WHP @ 0.7 bar. So it's not completely off, and will definitely give a good indication as long as settings are correct

Just wanted to let you know.