rhussjr Do you do any tturbo work,an advisor said not to try for economy with turbos,do them for power. Turbo-cummins does both !! Maybe they have a bigger engineering departmennt the we are used to !!
I have been doing turbos for the past 25+ years in VW and diesel applications. One project was a compound turbo on a VW TDI that made mad torque. For gas applications, I did a VR6 with 617hp / 513lbft to the wheels back in the late 90's early 00's. You can do turbo for economy, but given most do for power as it is the main purpose as a power adder. Low boost for additional power and torque on a stovebolt (or any other motor) can be had with the right setup.