BMW i4 rear diffuser fins - non m sport bumper

I have uploaded a print of rear diffuser fins for BMW G chassis non m sport cars. The car imaged is a 2023 BMW edrive40 non m sport. 

The profile has three fins but feel free to increase or decrease fin density. 

Clean the bumper well and make sure it is dried before adhering. Use a waterproof double-sided acrylic tape or 3M. You can also use a glue but that is very hard to repair and I preferred the acrylic tape.

You can also change the infill pattern and density to give different effect, I went with the honeycomb at 25% density infill with no top or bottom surface.