why would there be no EGT guage? without an EGT there can only be a guess as to exhaust temp(s)
I ask a gain what type of A/C? cowls can cause cooling issues.If your comments were directed at me?
(For those not familiar with "lean of peak" operations.)I do understand and thats why I asked where the EGT sensor was located.
Is this your A/C? lots of the A/C engines still use sodium cooled exhaust valves.also if run at higher altitudes,the engine does not run very hot at all,for obvious reasons: sub zero temps and 40% loss of power or more