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      09-19-2019, 08:29 PM   #24
pungo
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Drives: Z4MC-X3-35i-525i, Corrado G60
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For a little extra light output, whether you replace the bulbs or not, the projector lens (half sphere) builds up a cloudy film on both sides of the lens that reduces light output. Cleaning the lens will improve light output. You can also replace the stock Fresnel projector lens with a clear one which will also improve the light output. Neither is a dramatic difference, but a car with headlights low to the ground, every bit helps. I do the lens cleaning or clear lens when retrofiting dual AE and people say they noticed their lights seem brighter.
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