The issue is that the DEPO projectors are just pretty crappy. Narrow, streaky, and a blob of light in the foreground.
You'll want to retrofit a less-crappy projector with high beam functionality (like theRetrofitSource.com's FX-R or Mini H1) and that will help immensely. The advantage to the FX-R is that its beam pattern is REALLY wide.
See this thread for a better idea
http://www.e90post.com/forums/showthread.php?t=687893
And here's one with the Mini H1's:
http://www.e90post.com/forums/showthread.php?t=731237
Go on HIDPlanet.com if you want more information. I'm sorry to say this, but we've been a bit screwed over with the DEPO headlights. We pay a premium for the "super cool xenon lights with angel eyes" when in reality they're shitty halogen projectors never intended for an HID kit.
The folks at HIDPlanet can direct you to a professional retrofitted, or you can attempt it yourself.
One of these days I'm gonna take apart my LCI xenons and do a clear lens upgrade for a sharper cutoff line, as well as a custom paint job and LED rings. That'll be the day!