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      11-12-2010, 06:31 PM   #20
Mike@N54Tuning.com
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Drives: 2007 335i, 2015 M3
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Quote:
Originally Posted by ChiDiddy View Post
i'm still curious on what the tune actually does. does it increase boost and adjust fuel/timing? or does it optimize just fuel/timing per xx psi...
Diesels don't have timing but the JBD raises the boost slightly and increases the fueling. The result is better throttle response, great power gains, and a big grin post install.

Mike
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