So far, I am extremely impressed with Heatblur's rendition of the Phantom. However, (I know this might sound nitpick-y) the realism of engine simulations is always important to me and is vital in providing an immersive simulation. There are a couple of quirks I noticed about the J79 modeling that I hope Heatblur can clarify.
During startup, EGT immediately climbs to and stays at 450C, regardless of RPM and fuel flow. I am almost certain this behavior is incorrect. EGT should rise as FF and RPM initially increase, peak at a certain value (depending mostly on ambient conditions), and fall once RPM is high enough to provide sufficient cooling air.
Second, the RPM throttle response time is unusually fast for a gas turbine engine. I have listened closely to a few real-life F4 demo videos, and I do recognize that the engines spool quite quickly. However, the J79s in DCS can spool from 65% to 100% in about half a second.