Below 30 degs the engine is able to produce more than max (e.g. 27k). At 0 degs C it may be able to produce 30k (as an example only) without exceeding any internal limits, like EGT, fan speed and whatever other limit that an engineer may tell you about.
Please read AVENG post :
All engines in a series are all the same power wise. The company who owns the aircraft selects a power rating. A plug with small jumper wires is inserted directly into the EEC and this tells the EEC how much power the engine will make.
Hence, e.g. full forward = max rated thrust without over boost (EECs working in normal mode).
Over boost is for PISTON engines,i thought that was basic ATPL level knowledge.
You will over thrust by applying max thrust(thrust levers full forward with EEC on) but you wont overspeed.
To the OP,the EEC is for fuel and engine control.
It gets info about the ambient total pressure(PT) from the ADIRUs which get them from your static air pressure port (PO) and TAT or T12 sensor.
This PT will allow the EEC to command accurate fuel for the engine.
If PT becomes invalid,your EEC will got to soft alternate mode.
For the bleed info ,the EEC gets the info from the bleed switch positions..as mentioned above,bleeds off means less EGT for the same thrust position and the EEC knows that.
Concerning the EEC engine control,its not the question for today