2nd Gen Most liked posts in thread: R56 owner new to the site

I was thinking of replacing it just because but it isn't the cause of the problem. It looks brand new and hasn't lost any pieces. It has got to be the remaining pieces of the rubber piece above. They are probably everywhere in my engine and damaging and gumming up places like my turbo blades but I cannot find them or what piece they used to be. This is why I am interested in the air flow through the DV.
I will probably end up taking it to my mechanic as they can search much better and faster than I can.
@MCS02 It is a rubber piece, not plastic. Maybe that can help somebody ID it.

 

@DneprDave I don't know. The piece pictured above has quite a few nicks in it like it hit the fan blades or maybe just bounced around. Why do you say it couldn't get passed the turbocharger? That is just a fan blade that would probably chop the pieces up and then melt inside it.
Do you know what is before and after the DV? It looked to me like there is a connection between the DV and turbo but that was just a visual inspection. I have no idea of the airflow around the DV.

 

@Sully To catch you up from before I had a P129E code(Manifold Absolute Pressure Minimum Pressure Implausible), rough idle and low mileage. After tearing everything apart and replacing tons of stuff like oxygen sensors and timing chain I found a piece of rubber in the diverter valve housing. Scroll back a few pages for pictures. Everything was fine after I removed it. Code gone and idle was pretty smooth. Fast foward two weeks and it all came back. the code, idle, and mileage. Since it is exactly the same I assumed another piece of the same rubber part showed up in the DV again, but no such luck. Now that I have the burning rubber smell upon startup I think you can see why I am assuming a piece of rubber is stuck somewhere where it is burning but only flowing into the cabin at startup. Maybe some valves open or close a few seconds after turnover or the burning is so mild that once air is flowing it is not noticable.
I wish I could find an airflow diagram but all I can find in my Bentley is from the firewall back, nothing from the engine block.
Finding a piece of rubber in the DV surpirsed me and I still have no understanding of how that threw a P129E code.
So tomorrow will consist of more of a teardown. Intake manifold, DV again in case something changed, and intercooler pipes. Should be a full day so I sure hope to get a result.

 

Too bloody cold today to do much on the car. Replaced the hot side intercooler. Nothing inside the old one except a coating of oil. Also replaced the diverter valve with the newest model but with my luck lost one of the screws somewhere deep in the engine compartment so now have to wait to get a new one from Minimania. Wanted to use my borescope to look in the cylinders and take off the intake manifold but got too cold.
With the engine idling it sounded like I was getting an air leak on the right side of the engine but I have had two smoke tests done the past month so no idea what is going on. Maybe an exhaust leak? Would that not show up on a smoke test and cause a burning smell on startup? Again, only code is P129E.