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      03-09-2012, 07:00 AM   #4232
enrita
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Drives: 335i - Big turbos
Join Date: Sep 2008
Location: Italian in Sweden

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Quote:
Originally Posted by 335i E92 View Post
What defines the 'efficiency range' on stock turbo's? How do we know that 18.5psi is within the efficiency range?

Curious to know how this is calculated?
http://www.e90post.com/forums/showthread.php?t=256804
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