AUDI A3 How to work out compression ratio for compound turbo setup?


Registered User
Hi fellas
I need to know if I need a de compression plate or not on my compound turbo build?
its going to have the potential of running high boost which I know ant good!
turbo I have is a garrett gt2554r and still to get a gt3071r or hopefully a gtx3071r
at the mo it has all forged je pistons cr: 8:75:1
ADR Large port head and full supertech valve train std cams and lifters.
large inlet manifold full 3" threw exhaust.