So this image above that isn't a GM car looks to be just of a HID projector retrofit, with a tuned projector to maximize color at the cut-off, it looks good. Obviously the intensity and width of the hot spot and light output exceeds our stock GM SUV projector headlights. I'm familiar with how much bigger the hot spot can be, more intense the light can be, and wider beam patterns of various HID projectors and headlight retrofit work. Previous vehicles of mine have had HID projector retrofits and the light output is significantly upgraded over stock.
So your friends with Tahoes/Yukons that have upgraded their projectors; Did they actually just upgrade the lenses on the Tahoe/Yukon OEM headlight projector or did they retrofit an entire different aftermarket projector into their headlights? And which parts were used for their upgrades? Are we talking 2015+ models or older ones?
Not a retrofit headlight
Shops here can upgrade the lens it self.
They use the existing OEM headlight with the upgraded Hella lens.
Tahoe/Yukon 2015+ yes.
They use an oven to break the seal of the headlight, then they take off the existing lens and install Hella lens. Then they test the output into the wall with a large measurement sheet attached to the wall as the picture.
HID is ok since they have a ballast and Osram D3S
Halogen ones they use Hella ballast with Philips D2S bulbs. On other cars they use Lexus (Denso) ballast. They also use Morimoto HID kit with relays.
It depends on the watts and the size of the lens/bulb socket.
Later then, they use silicon base to seal the headlight back and then into the oven again.