Looks like a remote extruder, via a bowden tube? If so, not really going to be that good with TPU, as that really needs a direct drive (extruder on the hot end). Remote extruders were common for a while, as it reduced the weight of the moving parts.
Yes, remote extruder and bowden tube - several upgrades in my case but I doubt they'd help. I can imagine something squashy like TPU compressing and going s shaped inside the bowden, with corespondingly negative effects on actual extrusion rate. TBH I can see me having more use for ABS once I get going on the kit car, but there in lies a different brand of ar$e ache I fear

