[NISFAN]

Originally Posted by crazybones

I believe it relates to the twin scroll design of the turbo:

http://www.modified.com/tech/modp-09...system-design/

That article refers to a 4 cyl engine, but you can get the idea behind the technology.

.....except for one little fly in the ointment.....all single turbo diesels are single scroll and all carry 'Twin power' badges.