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Old 11-16-2010, 11:03 AM   #3
Scooby Specialist
Member#: 198067
Join Date: Dec 2008
Chapter/Region: Tri-State
Location: RAMSEY, NJ
2009 IMPREZA 2.5i 4d
WHITE Premium


Being the car wasn't running, you ran the lights with 12 volts. You'll have around 14 volts with car running.

Power = (E x E)/R , that's voltage squared divided by resistance

You'll have 36% more power with the car running.
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