i was searching through google and there are converters for horsepower to kilowatts and bar to psi.

however i was wondering for every 0.1 bar increase in boost pressure, roughly what does this equate to in engine power increase in kilowatts?

i know that this depends on the type of wrx and the type of mods done on the car, but for this case, my car is a 1998 wrx, with modified full exhaust and air filter.