Bi-Xenon means that that the single projector can do both low and high beam. There is a plate inside the projector that flaps down creating "hi" beam pattern. That's why I don't understand what the reflector bowl does on the E53.

On the E70, it's bi-xenon and the inner light is actually to light up the corona rings and the bulbs purposes is just for that only.

I have no DRL laws in NY either, just gets you a discount on your insurance if you do.

Lots of cars pre-led scene (basically before everyone started copying AUDI R8 LED lights) DRL was always used by a low voltage high beam or dual filament on the low beam lights.

Maybe the bowl is more for aesthetics?

DRL's were halogen across all years of E53 and E39.

Not every V8 has adaptive lights, but most 4.8's do. If you have HID in the US, you do have auto-leveling. It's a DOT requirement. Bi-Xenon was standard on all HID equipped E53's after the face lift.

The 'extra' halogen bulb in high beams is for flash to pass. Steady high beams use the mirror on the HID side.

I used IBus to code my DRL's off, added AE's and fogs as DRL.

https://xoutpost.com/attachments/tes...small-copy.jpg

I replaced my High Beam halogen bulbs with high performance LED units (with integral cooling fans) and couldn't be happier with them as my DRL light.

https://lh3.googleusercontent.com/1P...A=w813-h610-no

With LED high beams

https://lh3.googleusercontent.com/mZ...Q=w813-h610-no

I also added similar high performance LEDs to the fog light positions and now via the Android BMW IBUS app I can run the fog lights with my high beams as my DRL.

https://www.ibus-app.de/index_en.html

This is a phenomenally capable app for those that have upgraded to a more modern Android infotainment system and brings back quite possibly all the functionality (and adds new functionality) of the OBC menu.

I've used those in a different car... one burned out in a couple months. seems the cooling on most led units are inadequate.. little hesitant to use them again

I must have purchased a good manufacturer's product.

My high beam bulbs have been functioning well since November 2016 and the fog/driving bulbs since December 2016

:dunno: :dunno: :dunno:

Mike

would you know the manufacturer?

Yes, they are known as TC-X. I have used them for a bunch of LED lighting needs and I have never experienced a problem since doing business with them going back to 2016

https://tc-x.aliexpress.com/store/bi...99_224021.html

Mike

thanks. side note I actually wanna go the other way with angel eyes.. I want to make them more yellow not less. I see white halos everywhere but I want to have them match the side markers.. what color even is that.. just LED orange?

Personal preference :dunno:

I like the clear with an LED bulb in the side marker. VERY visible at night. Also courtesy of TC-X

https://lh3.googleusercontent.com/nw...A=w676-h902-no

Mike