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      07-26-2014, 03:05 AM   #20
surewin
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Drives: 2008 E92 M3
Join Date: Oct 2012
Location: Southern CA

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2008 BMW E92 M3  [0.00]
Quote:
Originally Posted by Wei718 View Post
Your headlights are Bi Xenon which means your hi and low beams run from the same bulb and ballast. When you flick on your hi beams all it is, is a shield inside the projector opening to let more light out of the same Xenon bulb. It does not get any brighter nor uses more power and doesn't affect your ballast whatsoever!
I understand how bi-xenons work. I'm referring to the situation where your headlights are OFF and you use the flash to pass (pull on stalk). Your xenons will turn on and off each time you pull. This is bad news for your ballast.
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