Apart from the obvious as above and there are no fault codes present (remember the fault codes in the 109E are in volatile memory in the EDU, switch off the master and they are gone for good) Examine the PLA and CLP system.
Is the PLA in the correct position on the FMM for "FLIGHT?" 55 deg +/- 5 deg. OK -> Check CLP system -> Are the CLVDT's (Collective Linear Variable Differential Transformer) functioning correctly? OK -> Examine the aircraft fuel system. OK -> Check the P3 air supply to the FMM. OK -> Replace the FMM
PWC MM 72-00-00
Additionally - why is the Torque/Temp matching option there? The 109 (all models) engines breath differently from left to right - can't remember which but the RFM will tell you. If you are in Q matching you can be deprived of performance from one engine reaching temp limits before the other where temp is the first limit. Flick the switch and you get a little power back