There is a lot of advice on this issue but in my case it appears to be a cracked flex pipe. Hoping this helps others diagnose their issue before spending too much. This may end up not being a solution to your specific problem but will assist in ensuring you aren't missing this as an option.

Note: we added the Trifecta Tune after the issue was already there. The tune did not cause this issue.

This problem is very common on a whole host of vehicles, but this video specifically speaks to the issue on the Chevrolet or Buick 1.4L Turbo motor. This is often found on the Trax, Cruze, Sonic, Encore.