Hi, I'm not very knowlagable with European turbo applications, how ever, turbo is turbo, I think. Volskswagon turbo applications are just the same as the Jap' turbo applications, I can't really see Porche as being so radically different that you couldn't benifit from some of the aftermarket goodies that you often see applied to rice vehicals. Just curiouse, how much PSI does your porche blow stock?? I'm sure you can tune it just like any other car for some exrta boost
I know of a place in Chicago called "DUB WERKS" specifically for Volkswagon tunning/turbo application, and they put all the boost controlers and bigger turbine uprade and all the "rice" turbo stuff on Volkswagon. I would go ahead and see if any of contolers/timmers benifit you at all, as I'm sure they couldn't hurt.
Just my two cents, like I said earlier, not very knowlagable on the subject but own a Mitsubishi turbo vehical. So this is just educated geussing on my part....