Put some LED's in my projectors a few weeks ago. Pardon pun, but like nite and day now.
The description says the anti flicker modules w/ CanBus circuits are in them already (ones I bought had them in the power line already). You will have to go into the body computer with alfaOBD, the OBDLink MX+ and a bypass harness (your '18 will need it) and make the changes in the BC from halogen to LED. Or dealer can do it for you for $$$$
Make sure you align the LED's so LED's face 3 o'clock and 9 o'clock to get proper cut off line on the beams. Then you will absolutely need to re-align the headlights so you won't blind other drivers.
Very easy and good mod.