How about APS just tuning the hell out of the sti and see how much boost the stock pistons can take
I mean you guys have been around forever and I am sure you can afford to blow an engine.
I guess it doesn't really matter if they are cast or forged but how much abuse they can actually take. Of course Forged are better and in building an engine for boost that's what you would always choose but in our case people that own STI's or that are thinking about getting them we just want to know what the Max boost or power the stock engine can hold
Hope this sort of ends the whole forged non forged etc etc
trial and error