Smoke test done. Shop found a few leaks:
- Vacuum connection at N75. They said the screw was hand-turn loose. This was a big one. Fixed
- At coil pack 1. Could be leaky channels in the valve cover? Small leak
- Left screw hole for the coil pack harness, but very small. I drove it in too far one time :/
- Right side of MAF sensor although I was told it would likely not impact the reading since it's before the sensor.