Boost whistle and injectors

[GavMc P11GT]

Have a very mild whistle at low revs when pulling away sounds like a boost pipe leak except it’s quite quiet disappearing as the power increases I’ve stripped the charge cooler out and inspected all hoses back to the turbo can’t find anything to be honest. The airfilter was a bit mucky but not too bad have replaced that. Any other things to check before it goes back together?

Have found a small amount of oil around 1 and 2 injectiors in hoping that’s spillage from the filler anyone got any other suggestions?

 

[GavMc P11GT]

Another pic

 

[Dundee_Kev]

You say the noise is when pulling away, is that the only time? If so, I doubt there is a boost leak.

Your oil leak, is it black oil? It looks like it is, so probably leaking from the seals around the injectors.

 

[GavMc P11GT]

You say the noise is when pulling away, is that the only time? If so, I doubt there is a boost leak.

Your oil leak, is it black oil? It looks like it is, so probably leaking from the seals around the injectors.

Yeah black oil a bit round #1 and. Touch more round#2 it does have a bit of an injector tick when it’s cold but when it warms it disappears. I checked values on VCDS nothing looked out of the ordinary.