Gixer you specifically said this when asked about their avionics systems.
None, they just didn't have they're usual AWAC's support.
I can tell you first hand that we do limit the use of our systems. How would I know that? Maybe because I'am an avionics systems technician on the F-15 and I'm the one disabling those systems. The crews are briefed on what they can and can't use. They are also briefed on what systems have capability limits (range, modes, ect...).
As far as air combat. No I have no first hand experience other than the books I read and seeing the videos of air combat that our pilots have done.
I have never discussed capabilities of a certain flight models. I have also never discussed any capabilities of helicopters either. Simple fact is by just limiting AWACS you have already disabled atleast half of one systems capabilities.