An S Curve 2x2 blocks Left turn. This something that Taxon asked me whether it was possible 3 years ago. He does not need it anymore when I last messaged him, understandable :D
Well it is when using custom blocks to get rid of the edges. This is a custom block based on the 1 block sized tunnel curve. You need to place 2 of these. Basically, the same principle as with my dirt S curve which I still need to upload on IX...
Definitely took me a few hours to make, especially as there is no way to split faces by 1 axis, so for some things I had to retexture while others I used a trick to split and change into triangles and split again which avoids some unnecessary faces at least, thank you trackmaniadude for that tip. Still, it felt like hell making this look as good as possible.
In the end, this item is still very large in size, at least it looks good and the curves are smooth. BTW, the lights don't work as with any block/item made in the mesh modeler, so for the map I used some of xrayjay's light items for Lagoon and placed them above the ceiling to brighten up the tunnel.