Well, I should clarify.
First, we used 9005's in the lamps, and they aren't "silvered" on the end so they are very bright in the center.
The other thing was we took out the "ring" that surrounds the bulb.
It made the foglamp project a slightly narrower beam actually, which was brighter. But it was a bit much to look into directly. Low slung cars in particular had a problem with it, but trucks never flashed me for the most part.