I bought this Impreza from a small dealer in December 2020. The only mod on the car I know of is a catless exhaust. I had the check engine light come on 3 days after I left the dealer and I got the codes pulled. One was and o2 sensor and one was the wastegate solenoid. Ended up getting the OEM turbo replaced. I have also had the MAF replaced due to a code. Now I have no check engine lights but am having a worsening idle issue. It runs rough more when it warms up than cold start. When I push the clutch in the idle drops and will actually stall. It has stopped running a few times when I come to a stop. One of the local mechanics suggested a vacuum leak. Any points in the right direction are appreciated.