HIF44 SU HS6 Velocity stack

This is a custom designed HIF44 (or SU HS6) velocity stack that I use it in my classic mini. It is a 40mm stack with 6.35mm radius (1/4") and a 10° slope. It follows basic principles of fluid mechanics and should work just fine. I may upload a 20mm version for those of you who have tight engine bay.

Print in ABS or PETG depending on how hot your engine bay is.
Layer height from 0.10 to 0.15 mm for best details,
Designed so there is no need for support.