While driving, when you accelerate it sounds like a bad manifold gasket. This is happening intermittently. Five days ago the ETS light came on along with the service light. I ran the codes and P1238 came up. I understand that code an be for the TVC or the service light. I cleared the service light and then the code and the ETS light went out, too. Hasn't been back on. Not sure if that has anything to do with the "roar" sound. I assume it is turbo related. I checked all the hoses from the TVC to the turbo, intake and turbo and they are fine. Could the wastegate/actuator be getting stuck or bad TVC? Any comment are appreciated.