I just replaced my n75 valve becuase of thinking my call was surging and possible overboosting because of it on my 2004 cayenne turbo. I did not notice much of a change but did note that the replacement N75 valve had smaller ports than the one that was on my car. Did the N75 valve change or did I get the wrong one. Also I would assume that if I was over boosting, I would get a code on durametric? The car has an evom tune and evom diverter valves.