[Biturbos4] HID light cutoff

John AudiFans at BackYardEngineering.com
Fri Jan 20 14:56:27 EST 2006

Quincy Chiang wrote:
> Hi all,
> I have European-spec HID headlights (ecodes) in my S4, and I gotta say the
> difference is very noticeable.  See the picture in the link below, left is my
> S4 with ecodes, right is my ex-A4 with North American-spec HID headlights:
> http://pictureposter.audiworld.com/41218/ecode_vs_us-spec_beam_pattern.jpg

Great picture!  :-)

> My Canadian S4 doesn't come with stock HID (stupid crash standards...), so
> the ballasts and bulbs are Phillips aftermarket, but it is 4100 or 4300K,
> same as stock.  As you can see, the ecodes' cut-off is even sharper, and it
> has a higher tilt to the right to illuminate road signs better.  They also
> concentrate more light to the center, right where you want to, but I think
> this is because of the smooth projector lens in the ecodes, as NA-spec
> projector lens have concentric rings in it.

I was thinking that one could replace only the HID projectors with the ECE
version for $150-$200/pair. The plastic cover has no optics and the reflector is
for the high beam and only appearance trim around the HID projector...

> Quincy
> '01.5 S4 - best possible lighting $$ can buy for my car
> '09 CoupeQ - worse lighting ever, thanks for nothing DOT!

LOL  Yeah DOT has been useless in the lighting area seemingly forever... I
stopped using WWII era DOT sealed beam headlights in 1972 in favor of Cibie' H4
ECE lights. Oops, I guess I just admitted to being an old fart... LOL


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