What Are These Sensors?

[Jazmac]

hi all

needing a little help identifying sensors under the bonnet. see pic below, have i labled the boost solenoid correct?? but whats the other 2 things as there is a hose leading from one to the other the bottom one labled No2 i think must be some sort of filter as it seems to have holes on the black cover.

how do i clean the solenoid as its been suggested it may be sticking cos im only getting 0.5 bar boost on my gauge as it looks like a sealed unit to me.

[cullenmin]

Top one is your MAP sensor (manifold air pressure I think)

Bottom one I'm not sure but feeds the manifold pressure through it before going to the map sensor. Possibly a filter but I did wonder myself not long ago.

Yes that is your boost solenoid that you have labeled.

Rich