VRayDirt is one of my favorite maps in VRay, I just love the extra AO that this map can produce!
Learn to have full control over your vray textures by giving them photorealistic look.
This map will do the trick for you :) with easy few clicks you change completely the way your scene looks.
So here we go – VRayDirt map as it is:

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Talk soon,
Alex
P.S.
Here’s a VRayDirt sample scene – with textures and rendering setup – press here to download.