I was using this Y splitter as was very simple

Bowden Y-Splitter for Bambu Lab X1 by ZzoyozZ | Download free STL model | Printables.com

However, as it was free to move around, filament would catch and kind of ping within the tube system.

I found a remix that put it in a box and I added holes to the box to pick up on the P1P PTFE coupler points as well as making it slimmer to be more in alignment with where the PTFE comes out of the printer.

It is now solid in place and it is very smooth when the AMS is loading.

Stand on to 2 opening end as per the original design.

Printed in PETG to try and make the smoothest filament path as PETG seem slippery compared to PLA.

0 infill required.

Printed with 3 walls and 4 top an bottom layers but this could be overkill as it is very strong.

isn't flat to the back of the P1P, overhangs the corner if you have a curved corner, but is within the width of the printer.

Bowden tubes just push in and for the months I was using the original design, with the filament catching, I never had a tube pop out. saves having to get hold of 3 PTFE tube fittings. Highly recommend the original model if you don't want to use this one.

I used 2 M3x12 screws to mount but i think a M3x10 will also work.