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some other links on these lights:
http://suvlights.tripod.com/suvlightscom/html/faq-qa.htm#3
What is the difference between the Sylvania Silverstar and the Osram Silverstar?
Osram Sylvania is one and the same company, within the US they use both Osram and Sylvania, outside the US its Osram. The Osram Silverstar is a clear bulb with Xenon gas boost to increase brightness up to 50% color is similar to standard halogen though it is slightly whiter. The Sylvania Silverstar is the same bulb but with an amethyst blue coating with 30% more light than standard halogen and 4000K light color which is comparable to Xenon/High Intensity Discharge Light Systems as seen on high end cars from Acura, Audi, BMW, Cadillac, Lexus, Mercedes Benz, Porsche to name a few.
Sylvania Silverstar is currently available in 9003/H4, 9004, 9005, 9006, 9007 & sealed beam sizes, the Sylvania Silverstar is the Super White (blue/grey coated) version of the Osram Silverstar (clear) which is available in H1, H4, & H7. Osram Silverstar color is slightly whiter (very slightly) than regular halogen. We also have the Narva Range Power Blue bulbs are made in Germany and DOT compliant. The Osram Silverstar is E code (ECE Reg 37) but not tested for DOT compliance (FMVSS 108) since the bulb is made for the European market, but most likely meets US DOT standards if tested. All these bulbs are stock wattage so it will not have any effect on wiring.
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http://www.hondasuv.com/forum_element/viewtopic.php?t=402
link has side-by-side pics.
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http://faq.auto.light.tripod.com/headlamp-faq.htm
What is the brightest halogen bulb? For the 55W marked segment, sorted in order of brightness: +50%: Philips Vision Plus (achieves its extra performance by increased luminance, not lumens. See this article: http://www.eur.lighting.philips.com/press/automotive/resultsVision.shtml) +30%: Philips Premium, Osram Silverstar (European marked only - see note below) +20%: Osram/Sylvania Xtra Vision, Osram/Sylvania Silverstar (North american marked only - see note below) +0%: Philips Bluevison, Osram/Sylvania Cool Blue, Osram/Sylvania Halogen Plus, and OEM bulbs like GE. -10%: PIAA Superwite
Silverstar: Do not confuse the European (clear glass) Silverstar with the North american (slightly blue tinted) Silverstar. The blue tint steals light!
Bosch Plus 50/60 was released in Europe in Sept 2002. The bulb does not have any blue tint, claims to not have any reduction in life, and give up to 20 meters longer view. It has been seem in H4.
PIAA "Xtreme White" was released ~Dec 2001. No independant tests have been conducted so far, but several positive indications has it that this can end up in the +20-30%.
Note that many cars sold after year 2000 already have premium bulbs installed and therefore buying any of the above bulbs might not give any or only minor improvement. Among H7 applications, there should be hard to find non-premium bulbs.
If your car is set up for higher wattage bulbs, Philips Rally bulbs will give more lumens than most asian overwatts. Be aware that lifetime of a Philips Rally bulb is ~100hours - so keep some spares in the glove compartment. Philips bulbs are availble from http://www.powerbulbs.com or www.autolamps-online.com Narva bulbs are also top notch. Narva is a daughter company of Philips with one intention: compete with top notch products on the aftermarked. Philips themself are OEM oriented.
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I'm gonna get the XTraVisions then. Cheaper too.
juan
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