if you read the government law about HID they are actually illega to fit (unless you are a boy racer ??) on vehicles without the correct lenses. I have looked into this as the beam pattern doesn't spread the same and you have black spots. often they look brighter but actually just dazzel yourself and others. Just clean the lamps up, and get some xenon bulbs and see how you get on, bright white look brighter but yellow is more friendly and the human eye adapts better to dark conditions
_________________
'99 Z28 A4, 253 LS2 heads, 228R TSP cam, Patriol Dual Springs, Double roller timing chain, LS6 ported oil pump, OBX LTs, 3" True Duals, LS6 intake, 42lb/hr injectors, SLP lid + bellow, EFIlive COS 3 Speed Denisty Tune (self tuned), 3200 Circle D stall, CAI mod, KYB AGXs, Eibach Pro Front Springs, UMI panhard, LCA + Brackets, Strut Brace, Custom Subframe connectors, WS6 axle with 3.42s, 18" American Racing Rebels, US mirrors, 93 tail lights, 3.5 inch custom cowl hood. Mickey T's Street DRs on Vette-ZR1 wheels for the strip !
Best ET: 12.0 @ 116 mph (on a 0-60ft of 1.8 s)