E-code is the European specification for lighting. It brings more of the light down to the road, and sprays less light overhead. There is a clearly visible horizon cutoff, with an upward angle on the right for lighting roadside signs and hazards. DOT has a fuzzy, indisctinct pattern (well, actually, there's almost NO pattern) with 50% of the light projected above the horizon. When using higher-output lamps, much of the perfromance gain is lost in the trees overhead...and in oncoming drivers' eyes.
It's easy to tell whether your lenses are E-code: there will be an E1, E2, E4, etc in a circle embossed on the lens.
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David \\ (98 S70 T5SE Black, misc mods (mostly lighting), red calipers) (92 940GLE)
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