Hi
I am just starting out printing parts for the lowrider 4, and have some questions in regards to print settings in bambu studio
Do I need 3 or more wall loops or are 2 sufficient? And is setting 1 for fill multiline OK, or should these walls also be 3 layers thick?
Thank you in advance for helping a beginner out 
Welcome @T-stone! Recommend ensuring your printer is well calibrated for dimensionally accurate prints to help maximize joy during your build, and, minimize waste of your time and material. Strongly recommend using Calilantern.
If the docs are not loudly shouting out this sunny happy path to success, please let us know so they can be tweaked.
What nozzle size, and layer height are you using?
Personally used 3 walls with 0.6mm nozzle, 0.66mm layer width, 0.32 layer height, plus alternative layer infill wall. Doc recommended infill percentage plus 10% because extra print time is small fraction compared to time spent using the machine.
https://docs.v1e.com/lowrider/#diy says 3 walls. Also says up to 80% width to layer height ratio, but, lower more conservative ratio closer to 50% isn’t uncommon here.
You want at least 1.2mm Perimeters, so 3 wall loops for a 0.4mm nozzle and 2 for a 0.6mm nozzle.
Aza’s additional perimeter on the 0.6mm nozzle would do more for strength than the 10% bonus infill
Thank you for the quick answers!
Nozzle size is 0.4 and layer height is 0.28, with initial layer 0.2