Newbie HID Qs

[crice]

Been reading this thread http://www.candlepowerforums.com/vb/showthread.php?t=204342
and wonder if somone could answer a couple of questions for me.
1. Could the techniques in the above thread be applied to OEM Hella ballasts, anyone ever 'tweeked' those?
2. I saw this site http://www.xenonvalot.com/boost.html some time ago which seems to me to suggest you can over drive a standard 35W Phillips D2S HID 'bulb'. But then on here I started reading about 50w HID 'bulbs' and over driving them. Would I get more light output by modestly over driving a 35w HID 'bulb' than I would driving a 50w HID 'bulb' at 50W? What is the difference between a 35w 'bulb' and a 50w 'bulb'?
3. People have told me that I'll never get the beam pattern right putting HIDs in a reflector (PIAA 80 series lenses) designed for H4 halogens, is this true? The lenses are being used on a rally car so the low beam part of the H4 bulb never gets used.
Thanks.

 

[Morepower!]

I'm afraid I know very little about the automotive side of HID. But if you have a look at HiDPlanet forum, in their "University" sub-forum there are a few "how to's" involving OEM ballasts. I know they are getting some good power out of the Bosch ballasts. As near as I can tell the difference between a 35W and 50W bulb is their ability to withstand higher pressures in the arc chamber, and maybe even heavier electrodes ? I've read you get more light from a bulb by it being overdriven than underdriven. By overdriving a bulb too much though there is a risk of it exploding.