What lights did you convert from?
I'm not familiar with the HB4 element designation. I have H-4s.
Did you convert one light and then take a picture of the beam pattern on high- and low-beam against a wall?
I converted from halogens to LEDs in the Hella H-4 housing. The phenomenal low-beam cutoff went away. I had to apply a field expedient fix:
Also the halogens had good high beams, I could light up reflectors on road signs a quarter mile down the road. The LEDs have good color temperature, but don't have that reach.
For another thread I was looking at
beeping backup lights. They only seem to be available in halogen. Backup lights would be a good use case for LEDs.