This is done when you remove your intake manifold yeah? And then you clean via using the intake manifold inlets in the head yeah? (that's the hole we are looking through?)
Will EGR delete valve and Catch Cans reduce this?
Im doing this soon, have wire brush drill bits and meth so should scrub up good.
Yes egr and occ will definitely help. You're better off doing those first or it will just clog up again.
I had a quick look at mine when I did the egr delete and it looked disgraceful.
Again... everyone should get this done at 60k miles max.
This sounds expensive to do at a shop? How many hours for a trained mechanic to do this?