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Old 12-20-2012, 07:01 PM   #44
sea6speed
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Join Date: May 2010
Location: Seattle, Washington
Posts: 1,450
My Ride: 2011 135i 6MT
Turbo engines also tend to weigh less than naturally aspirated engines with the same power output.

I think the only reason we're not seeing more is just due to lack of development. If you look back a few years ago, the new turbo engines coming out weren't at all optimized for fuel efficiency. Mitsubishi, Subaru, Mazda - none of the 2000's generation engines were particularly clean or thrifty. Interestingly, Subaru's latest 'base' engine that they introduced to improve efficiency is NA.
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