I went ahead and ordered that kit. Going to try to to Frankenstein the Two kits together.
How does the App work with the three controllers? Do they all pair to the app, or is one connected and then repeated to the other two?
I would imagine the controller I have now from SUMK would not be compatible with this newer set. Are there still 4 total Emitters on the new kit?
Thanks for the update
Here's an update, I wired it up, the "branch" controller instantly synced up to the main controller. I am talking as soon as it got power, it was the right color. So they definitely work off the main controller very quickly. I am going to migrate everything I did previously to match this new kit, first of all the light emitters fit much more snug with the light tubes themselves, screws aren't even necessary.
I am going to put the "main" controller where my current center console one is, and the two "branch" controllers on driver/passenger.
The driver and passenger install is difficult in that you got to fit yourself into a tight spot, but if you did the footwell lights already, you know the situation.
Also, the footwell lights also sync LED color as well, which is a welcomed bonus for me. I think with how this is, at least on my 2022 M3LR, I can probably "fish" the emitter up through a hole on either side after removing dash end pieces, but not sure if this is the best way, if I choose this route I will need to make sure there's some adequate tension to avoid any potential rattles. I have some rather stiff bell wire I can probably use to do the fishing task. There are two large holes on the driver side at the very least the emitter will easily fit into.
I'm actually thinking to remove the dashboard trim to make the adhesive and alignment step on the dashboard strip a bit easier, as it would be a bit tight for me to do with just my fingers, but maybe I can manage without.
Overall, for $50, this kit works really well and doesn't require removing any trim in theory aside from triangular end pieces, and looks a lot more sane.
The dashboard LED strips are unfortunately worthless, they want you to route them behind the screen going toward the door and not only will wires be visible if you looked, but so would the emitter, and it doesn't even leave a gapless situation. If each half was longer it could maybe pass, but a single strip is by far the best play. However, it looks as if they don't want you touching any trim or clips minus the screws under each footwell. The place they want you to mount it doesn't even really make sense since it won't be flush with the adjustable steering wheel. Routing it like how GreenHokie has popularized with the AliExpress kit is definitely the way to go.
I was going to attempt running them deeper into the air vents but I am probably going to bail on that idea due to complexity, but may revisit that if I can find a more appropriate fiber dimension and design in future. I recommend some decent double sided tape or command strips to mount the controllers, maybe some wire clips as well (optional, some form of tape would likely work just fine).
Good luck, you'll see what I'm talking about when you get your kit.