Airbus: FLEX temperature

[ZAGORFLY]

If i tell the engine that the FLEX temp is the same of the TAT the engine will deliver me the max power or TOGA. If I require less power I have to fool him telling that is hotter, then it will deliver me less. why? Thanks.

[barit1]

This website (http://www.b737.org.uk/assumedtemp.htm) is specific to the B737, but the principles apply equally to other types - even to Airbuses! (Airbii??)