Totally different design of the variable geometry in the turbos. Cummins/Holset use a sliding vane (see Issue 70, page 48 for the picture and the principle of operation) and the EcoDiesel... does not have the Cummins/Holset design of the sliding vane, but rather a different type of variable geometry. So, all VGTs are not the same. Sounds like a good TDR research article. I'll do the research for Issue 92.
RP
RP