the fact that the act compensation ignition table took out may be 4 degrees at 60C is nothing to do with why you lost power
The reason you have lost power is the fact that the act was 60
less fuel would have been injected at this act as you had far less oxygen by volume entering the cylinders
move on from the act ignition retard
22 degrees C would have been the cell temperature not air charge temperature the weber l1 l6 and l8 ecu are speed density
had his act been 23 he probably wouldn't have so little power