Tightened the actuator as far as it will go, still only about 9psi. Parked the car and turned the wheel to take a closer look at the CAI, and the System too lean (bank 1) code reappeared.
Idle is still pretty rough, and there is a fluttery sound under the car. I'm thinking it's gotta be an exhaust leak. Once I get back in ill upload a sound/video file.