I am having issues with my SS TCS. I replaced the cam solenoids (variable valve timing) on top of the cam cover. (which ended being the check engine code error) but prior to that I changed the crank angle sensor and the cam angle sensor intake side? behind the motor on the right side. Anyways right now my motor has been making a whistling sound like turbo wanting to spool. but not having the power. This will come and go and sometimes the turbo will kick on and spool like normal. Does anyone know what this could be? I don't currently have a check engine light on.