Seriously NO!!!!!!!!!!!!!!!!
The sim has already got engine wear modelled and this will give planes progressively worse performance as part of the game engine although I do not think it activated yet.
The last thing we need to do is to add random engine tuning/performance to the mix.
If you are skilled at CEM you can eak-out a few extra RPM, no problem. But to gift it to a pilot as a random "you got a good plane from the factory" event is plain stupid period.
Why not add an ejector seat and rocket packs and call the sim Duke Nukem Does Britain