This isnt the math that everyone is laughing at, itsOriginally Posted by string
160kW @ 4psi = 20kw / psi (10.5:1 ~80kw stock, which is generous!!)
through a 1.75" exhaust
compared to
199kw @ 9psi = 12kW / psi (11.2:1 ~90kw stock, which is generous!!)
through a 3" exhaust and a turbo which flows ~10lb min more.
my stock d-series went
120kW @ 8.5psi = 7kW / psi (9.2:1 60kW stock)
through a 2.5" exhaust and a turbo which flows less then any of the above
I guess we all need a MPH to settle this argument!![]()


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