Question for the experts on exhaust dynamics

[texlurch]

I am trying to determine how the exhaust of a diesel compares to that of a gas engine, given equal displacements.

In other words, a diesel exhaust is 150% of a gas engine, for a given rpm. I figure it would be more at lower rpms, but just a rough estimate.

What I am trying to determine is how the turbine side of a given turbo will act on a diesel versus a gas engine.

I know there is more coming out of the oil burner, you have close to twice the compression ratio, plus diesel releases more heat from combustion.

I also have a chart off IHI's website; it lists the same model turbo for diesel or gas burners, looks like the displacement is around a 1.6 factor, gas to diesel, so 150% should be close?