I just want to know if manifold gauge reading is the of total boost being backed up in the plenum.Not sure the question
But the it is the sum of the individual PRs from each turbo
Say 60psi boost single.... PR of 5
Now a twin set with the same 60psi in the intake overall and 30 psi showing between compressor stages
That is a PR of 3 on the low pressure (big) turbo and a PR of 1.6 on the high pressure (small) turbo
That PR on the high pressure turbo is what hardly anyone seems to understand
Love it, i'm a VW enthusiast.I'm currently building a compound turbo setup for my little 1.8 vw golf like to see 60psi of boost at the manifold. I'm using 3x 44mm wastegates, 2 for the HP bypass and 1 for the LP.