Spoke to the engineers today who are doing my engine and I chatted to them about getting my pistons skimmed 1.9mm to lower the compression for the turbo.
They said it doesn't work like that because there are too many variables inside an engine which contribute to the compression i.e. headgasket thickness and head depth etc..., what they did ask for is a compression ratio I would like the engine to be and they'll work out from there how much the pistons need to be skimmed.
So what compression ratio everyone else running in their F7 turbo's, what works best and what differences are there?
Cheers