Yeah that is how vento does. 100kmph in 2000 rpm. That will give you better fuel economy at given speeds. I have done 190 in my linea, so 90hp punto can also do it. Recently we took a 90hp dieseltronic box fitted punto on express way and touched 185kmph. Then we took my stock linea too and did the same kmph. This proved that tuning box doesnt increase the top speed.