Took mine apart and cleaned over the weekend, pre-cleaning pics attached. I reckon I got an egg-cup full of gunk out of the manifold, although the EGR valve itself wasn't too bad. Mine was impossible to separate, also.
I had the same experience as AAmbro, no turbo for a few minutes until suddenly it was back. It has stopped idling roughly, which was what I hoped for, but can't say I notice much other difference in the car, perhaps it's going a bit better below 1500 rpm though.
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Current 2010 V70 D3 163bhp
Previous 2003 V40 1.9D 115bhp
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