[mr0077]

Dominik, try to get a copy of an olod HP book titled "How to Select and Install Turbochargers" by Hugh McInnis...it is excellent, by an authority, written before EFI, so it talks about how to sizeturbos, read compressor maps, suck-through vs. blow-through, compression ratios, valve spring requirements, water injection, ignition curves, rods, pistons, etc. He dealt a lot with RayJay Turbos, and I think they are outa bidness...but, the info is still valid.