Ok, to clarify a little further, there is a Walbro 550hp fuel pump in the tank right now, sard fuel reg ready to go in, HDI front mount going on as well as a TCP 3" exhaust, sourcing some STI injectors and by the looks of thing the Vipec is going to get the job of residing in my passenger footwell.

Do I necessarily have to break open the engine to attain the figures I'm looking for?