Exhaust blowing on primary turbo

[Smiffers]

Just been investigating a problem with an slight blowing at the downpipe/turbo end of the system.

No evident blowing around the downpipe - I wasn\'t expecting it to be that easy!

The blowing only seems to be noticable when on the primary turbo - Does this indicate the turbo -> manifold gasket is blowing around one side of the control valve???

Any ideas before I pull the turbos off? :reallymad