phidauex
Well-Known Member
- First Name
- Sam
- Joined
- Dec 8, 2020
- Threads
- 16
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- Location
- Colorado
- Vehicles
- 2021 MachE 4EX, 2006 Prius, 1997 Tacoma
- Occupation
- Renewable Energy Engineer
They open when the coolant system needs more airflow, but they are kept closed when not needed to improve aero - I tend to see them open during charging, sustained long drives, and particularly during extended descents with a lot of regen.I think I've seen them mentioned, but when do the air ducts/louvers above the front air dam open? Are they for aero or cooling?
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