As odd as it sounds, when I put the 4700k kit in my wifes 5, I couldn't see as well at night. The bulbs put out so much light on the ground in front of the vehicle it killed my night distance vision. Made driving unlit, curvy country roads a b****. Anything beyond the cutoff was just pitch black. Anything inside the cutoff was bright as hell. I think I sunburned a few small animals trying to cross in front of me.
I ended up putting the stockers back in. Putting HID bulbs in the projector just wasn't as good as the OEM HID setup. We had them in our 2004 and again in our 2010 Mazda3. Big difference in quality of light.