Wet thrust was specc'd to be 80kN in the ASQR, 90kN was just IAF's "desire".
https://forums.bharat-rakshak.com/viewtopic.php?t=6726#p1578614
So just like any other turbojet/turbofan program, Kaveri also had it's performance (Th - 52/80KN, SFC - 80/207 kg/kN.h, TWR - 76N/Kg) parameters define...