The cam will bleed off some compression. Which will allow you to run higher boost.
Is that why you want lower compression?
Yes, thats what I'm thinking. I know that the R&D cam is supposed to bleed off some compression. I thought a slight drop in my compression ratio might also be beneficial. I need to do some math after the machine work is done to determine what my options might be. I'm watching the AK3 turbo developments currently and have talked to Mel about his proposed turbo upgrade. I'm planning to go one of these directions. I won't be cheaping out on the turbo. I'm willing to pay to have the best option out there for me.
The Mahle pistons with the black anadoised coating will not accept a ceramic coating on top of them.. That anadoised finish must be machined and snad blasted off before ceramic coating. I only know of a 10 under piston for lowering the compression. I did not know Mahle had a 20 under too.
One builder told me he could get .020 under MAHLE pistons also. I'm not familiar with what anodized coating is. If its a heat shield coating similar to a ceramic coating then maybe I don't need to change it.
I'm not trying to build a race engine, but one that performs very impressively and gets the job done for years to come with durability and longevity being key.