Sorry if its in the wrong section but im sure someone will move it if not lol.
I have a impreza 2006, how much can the standard engine endure? Ive have my car on the rolling road and I achieved 331 bhp with a ecuTEK remap, k&n induction kit and a ninja back box. Just out of interest, if I was to bolt on a bigger turbo at what power would I need to think about fitting stronger internals?