Thread: My F15 X5 xDrive50i Build - European OEM+
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      04-01-2014, 11:23 PM   #23
katsu
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Drives: 2016 M4 (Tanzanite)
Join Date: Apr 2008
Location: Irvine, CA

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Quote:
Originally Posted by wdimagineer View Post
- OEM ECE-spec Adaptive LED headlights (ECE beam pattern)
what's an ECE beam pattern and why is it better/different than the US spec?
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