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Old 01-25-2013, 08:31 PM   #242
CRAZYHAWK
Scooby Specialist
 
Member#: 198067
Join Date: Dec 2008
Chapter/Region: Tri-State
Location: RAMSEY, NJ
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2009 IMPREZA 2.5i 4d
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Quote:
Originally Posted by Bluefoton View Post
Colour temperature ratings apply mostly to HIDs, not to halogen bulbs. Any filament bulb shifted towards blue is done by filtering out the red (i.e blue coating) - or, to a very limited extend, by increasing the voltage, which drastically reduced their liftetime. H9s are already "whiter" than a lot of OEM halogens...
I think you ment, "increasing the wattage", not voltage.
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