You said FSI, right?
OEI shall not disengage the TQ Limiter, OEI shall disengage the OEI trainin' switch.
Like HLCPTR wrote, the TQ Limiter is necessary to allow functioning of the OEI training switch.
I strongly suggest you and your course buddies review the AW139 Section 5 RFM Supplement 12 section L :"Cat A OEI Training".
The OEI TQ shall not be limited BY THE TQ LIMITER, but it shall be limited by other functions to 160% OEI, 2.5 minutes plus a 10% 5 seconds transient, after which the rotor RPMs shall droop.
BTW, 140% OEI is all you are going to get with any collective mode engaged.
I stayed at the Holiday Inn Express last night.