Can you identify what this is?

[Stonefish]

Hello,

Can anyone identify what this is on the inlet manifold of my CCWA 3.0TDi engine? I've bought a snakecam/boroscope and hope it might be an inspection hole to allow me to see the swirl flaps.

Cheers.

 

[desertstorm]

I am not sure it's an inspection hole although it may be possible to see the flaps there is only one of those brass plugs on the manifold.
I use it as a very convenient place for a Boost tap for the boost gauge.
Karls 3.0 TDI build thread

 

[Stonefish]

Thanks, Karl. I'll take a peek next weekend.