As I understand, the NCTR of the DCS versions of F16/F18/F15 should only work on hot aircrafts. I believe there are other forms of NCTR but for more modern versions.
I know its WIP but unless it's something else, the engines loop sound is... annoying.
You can hear the loop, a 22 second stronger engine sound and then a 10 seonds of a quieter sound.
I hope Razbam can improve it.