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      07-15-2013, 11:02 AM   #27
Alex@Alpine
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Drives: E90 M3
Join Date: Feb 2010
Location: United States

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Quote:
Originally Posted by dereksM3 View Post
What is the technical difference in the Jspec tune? Is there any minimum fuel requirements? Wondering how much of a difference there is with the valve timing, fuel, timing, afr, etc. Any more feedback on this tune?
It's not a tune, it is factory SW, min requirement of 91octane.
Appreciate 0