I bought this wastegate brand new and it doesn't have any issues. I thought I had a boost problem, turns out the exhaust pipe before the turbo was too big, so now my internal works efficiently. I did switch the spring out. It comes with a 7psi (installed), 14, and 21 psi spring, v-band clamps, v-band flanges, and all necessary hardware to mount the wastegate. This has no flaws or issues and has never been used on my car or seen any boost pressure. I am asking $150 for it. PM me if interested.