cant use gt28 cos it already max out at below 500hp..upper class is gt30r then next is gt3540r..so.. depend on ur engine setup..gofor gt3540r for maximum capability by using.63 turbine Ar..i said this because of..to maximized hp on gt30r u need larger turbine ar..which mean u need to sacrifice ur boost threshold ..so i vote for gt3540r:proud: for 500WHP..
All of us have experiences that the car cannot start when we want to go to work, go to shopping, come back from work and etc. This is very painful if we are not able to reach the destination on time and it may cause you lose the money.