I kept having this fault code rear its ugly head on me for a while now. The engine would sometimes be okay and then other days it would be underpowered. I checked the MAF sensor and that was working all in order. I checked all the boost hoses and vac hoses. They appeared all in order and I couldn’t see any obvious signs of damage or leaky joints. So I initially changed to the new revision diverter valve and took the car for a drive and the fault code came back. So I then changed to the new