Received mine yesterday
Thanks Bill! Shipped right away, received in 3 days, installed in 5 minutes. I definitely notice less engine noise, though I bought it more to keep my hood from getting so hot. Why did BMW stop building cars with these? They used to think they were necessary (else why would they ever have existed), but now they don't? My E90 came without one too, so I installed one. Just feels more correct to have a heat shield on the underside of the hood. The sound reduction is a plus.