Hello, so i have some question, i would like to know what is the best boost for this turbocharger if I whant it to tune. Highest stock value is 2500mbar, i heard that the best value for tune is about 2650mbar. But other saying is 1.7 bar is enough. that value is much less than a stock. I know that boost not taking performance without I.Q. But which preassure is the best?
Sorry for my gramma.

I am not exceeding 2650 mbar for target boost.