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Okay here's the deal i swapped a gtx engine in my pro lx now i adjusted the vaf so i had a good idle now i want to adjust the spring that make the tension on the bar that move when the air come in has there's to much fuel on boots. I saw a screw on the side of the vaf with a lock nut i think it's the one does anybody know for shure

that shouldnt be adjusted. your ecu should be able to control these functions normally, depending on your setup and if its the right one.. i think your trying to fix another problem your not aware of..