So I am about ready to order a turbo kit from ZZP, but ran into a question that ZZP was not really sure about. Did a search on here but was unable to pull up anything in regards to these engines equipped with air pumps. I'm a New York state resident and for some reason my car is equipped with an air pump which is hooked up to the rear exhaust manifold. From what I understand this is a typical set up for cars designed to be used in the California market because of the stringent air quality control issues out there. In any case, my car has this set up and I easily modified my SLP Headers for this, but since I am going to be going Turbo, I will be replacing the SLP headers with ZZP front and rear Plogs. ZZP does not believe I can modify their headers to accept the air pump hookup and also believes it is not recommended because of the turbo pressures. Does anybody have any experience with these air pumps? Can it be removed? Does the PCM need programmed to delete this feature? Sort of at a loss right now, this seems to be last hick-up before I order the Z7 kit.