I won’t go into details on a “how to” since all of this has been well documented so here’s the basic info with pics...
I swapped out the stock incandescent DRL (BA9s) and tested a few different LEDs but ultimately settled on the white 5500K LED.
Then I decided it was time to swap out the low beam (D2S) as the original bulbs dimmed over time. I couldn't decide between the Osram CBB and Philips Extreme Vision 2 so I ended up getting both. The CBB's have a more true white output so those went on the Z. The Philips are marginally brighter (but yellower like factory) and those went on my wife's X3.

Osram CBB on left. Philips EV2 on right.
Low beam upgrade only.
But after having done so much research on lighting I became really intrigued with projector upgrades. As good as my lighting was now, it lacked the intense “hot spots” (which translates to distance) and sharp beam cutoffs. So I bit the bullet and picked up a set of Morimoto EvoX-R 2.0.
Morimoto EvoX-R 2.0 (3" clear) on left. Factory Hella E55 (3" Fresnel) on right.
The install was fairly straightforward other than having to get around a small igniter issue but overall well worth the time and cost. Only way I can describe the lighting is ‘ridiculous’ lol.
Low beam and projector upgrade

I swapped out the stock incandescent DRL (BA9s) and tested a few different LEDs but ultimately settled on the white 5500K LED.
Then I decided it was time to swap out the low beam (D2S) as the original bulbs dimmed over time. I couldn't decide between the Osram CBB and Philips Extreme Vision 2 so I ended up getting both. The CBB's have a more true white output so those went on the Z. The Philips are marginally brighter (but yellower like factory) and those went on my wife's X3.

Osram CBB on left. Philips EV2 on right.
Low beam upgrade only.
But after having done so much research on lighting I became really intrigued with projector upgrades. As good as my lighting was now, it lacked the intense “hot spots” (which translates to distance) and sharp beam cutoffs. So I bit the bullet and picked up a set of Morimoto EvoX-R 2.0.
Morimoto EvoX-R 2.0 (3" clear) on left. Factory Hella E55 (3" Fresnel) on right.
The install was fairly straightforward other than having to get around a small igniter issue but overall well worth the time and cost. Only way I can describe the lighting is ‘ridiculous’ lol.
Low beam and projector upgrade
