Help us help you. By posting the year, make, model and engine near the beginning of your help request, followed by the symptoms (no start, high idle, misfire etc.) Along with any prevalent Diagnostic Trouble Codes, aka DTCs, other forum members will be able to help you get to a solution more quickly and easily!
Maybe disconnect the knock sensors to see if it is whats commanding to pull boost , knock sensors have a ton of control over the boost and a ticking can be interpreted as preignition by the ecm
Think I have had similar problem . the pick wheel for cam sensor incorrectly installed . remove cam sensor and check pickup wheel is located properly lug located properly in slot in cam . hope this helps
