At typical sitting in the tiedown warmup idle my #4 EGT is 1400+, a solid 250+ above any of the other three. CHT is only about 20* warmer. Slow idle, fast idle, rich, leaned... the differential remains the same. In flight? #4 EGT comes down and the other come up so they're all pretty even. CHTs are fairly even.
Why the higher EGT at #4 with low throttle settings?
Why the higher EGT at #4 with low throttle settings?