I just instaleld a boost gauge and noticed I was getting boost cuts. I am gonna get it on video and post it here. The car spools up to 15.5 psi and when it hits a little over 5 rpm it drops suddenly to 10 psi. Why? Could bad gas do this? Also this morning, there was a rattling noise coming out of the engine bay and the car was only boosting 12 psi and cutting to 9 psi, would the rattling trigger the knock sensor and only let it boost to 12 psi? The rattling was a little filter knocking againt the BOV.