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      03-18-2013, 10:47 AM   #18
InspireSiR
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Drives: 2002 BMW 540i/6
Join Date: Oct 2005
Location: Los Angeles, CA

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Quote:
Where does this thoery come from? I am not sure what's the M diesel offering in Europe. But 3 traditional turbo wont work for 6 cylinders, it's basic mechanism. The tri-turbo in rumor is a electric turbo (more like a motor) working at low end to keep traditional turbos alive and disconnected where exhaust start to take over the job.
Theory comes from this:

http://www.topgear.com/uk/car-news/b...50d-2012-01-26
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