The 'cover' as you call it acts to block any light other than reflected light so the beam is straight out from the headlamp. This makes for better lighting in poor weather conditions, exactly like a fog light. The high beam doesn't have one cause all you want them to do is shine as far and brightly as possible. You don't use highs in bad weather now do you? Removing the cover will actually give you brighter lighting in clear weather, but more dispersion in fog and rain. The choice is yours.
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96LX/ATX/A4 repeaters/SVT exhaust/KKM/E1 suspension/SE rockers/BAT swaybar/urethane bushings/Kenwood 7 speaker syst./
Soon: SVT brakes/E0 rims/225 50 16 XGTV4's........
96LX/24V/ATX/Midnight Red/A4 repeaters/SVT exhaust/KKM/65mm throttlebody/SVTsprings and ST200 struts/SE rockers and BAT spoiler/BAT 19mm swaybar/urethane bushings/Kenwood 7 speaker syst./E1 SVT brakes w Powerslot rotors/9005 lowbeams/885 fogs/50% tint/Michelin XM+S 130's for winter/E1's with gForces for summer...and now "New Paint!!"
87 Renault GTA convertible/2.0l/mtx/Sony sound/otherwise stock
http://members.shaw.ca/neilmc/