I want to swap the bulbs in my Prodrive headlights. They use H7's(Hella)

I am looking into the PIAA Plasma Spark Blue bulbs, which can produce 7500k. I believe these are not HID bulbs.
But i don't understand why the power spec is written in this way: "55W -> 100W"

Does that mean these bulbs would consume 100W instead of the standard 55W?
If so, would there be any effects on other electronic devices on the car? Do I have to upgrade other parts as well? (like using higher quality wires for the headlights)

thanks for help
ben

PS: one last question, anyone know where I can get them cheap?

 

Supposedly they draw the same 55W as the stock lights but produce equivalent light to a 100W bulb. This type of claim is generally bogus but they probably won't harm anything beyond your wallet. The light output may not be what you expect.
For a FAR cheaper H7 alternative, you can try a set of Hella +50s which do in fact produce somewhat more light than stock 55W bulbs using the same power, and they do not have any blue coating on them. They are quite cheap at about $11 per, you can get them at www.rallylights.com

 

Thanks.

Now let's talk about science
How can light bulbs that consume the same power but give off different brightness?

 

Allegedly it has to do with whatever magic gas they put in there along with the coating. Basically marketing BS and of course all a coating can do is reduce the amount of light coming out and change its color.
The Hellas don't make any tremendous claims for increased output, but they do genuinely produce more light than an equivalent standard H7. I have a set which I'd be using if I didn't have HIDs (I may actually go back to them eventually) and I also have a set of Hella +30s in my high beams which are noticeably brighter than the stock H1s I took out.

 

http://lighting.mbz.org/tech/bulbs/s...uperwhite.html

 

Hey Peaty i just wanted to thank you for the writup and the links to Daniel Stern's website. I ended up getting a set of fog light and headlight bulbs from him and I'm pretty impressed, they're much better than my $60 dollar a set Piaa Xtreme's I had before.-James

 

You may want to try to the Philips Hi-Vision plus bulbs. They have been shown to provide a real good amount of light.