As an average passenger, one wouldnt know any difference, other than exceptional acceleration & a mean initial climb rate on short to medium sectors.
As mentioned before, these engines before the rollback incident were almost always taking off at reduced take off thrust levels, for fuel saving & engine life purposes! One just doesnt need the power which is on tap, for NORMAL everyday operations.
To date, my experience with the new GE115B(that is 115000 lbs of capable thrust, by the way) has been very good & reliable unlike the teething problems encountered with the 94B!
Couple of regular service bleed problems & naturally engine cowling; opening & closing problems, simply due to its shear size, weight & 14 cowl latches; but no engine problems, besides this Fadec software issue.
I believe Etihad report having had 2 engines with vibration problems, requiring removal?
If so please share the knowledge
.