<VV> For True Turbo Techies

[John Kepler]

 Instead it uses them in  parallel
> (sort-of). A small turbo to boost at low revs with intake air  pulled
through
> the larger turbo (it's exhaust side operating but not very  effective,
since
> the exhaust gas has already gone through the small turbo.) At  mid-range,
the
> exhaust goes through both turbos, though some exhaust gas  bypasses the
> smaller turbo and goes to the bigger one. Eventually only the large  turbo
is
> operating, and the small turbo is bypassed.

Hmmmmm.......I wonder if BMW has talked to Mack?  This sounds an awful lot
like Mack's proprietary "Torque-Rise" diesel engine to me!
Garrett-AiResearch made the turbo to Mack's design.

John