Quote:
Originally Posted by prydey
Mine stays on fresh unless following a stock crate or something.
It is actually dangerous to use recirculated air for extended periods.
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Depends on who you believe, from what i've read we exhale 5% CO2 when we breath and so to reach dangerous levels in a car you'd have to inhale the entire volume in one breath or at normal breathing about 10hrs give or take, thats assuming that a car is 100% sealed which it isnt even with recirc on, only Tesla has a bio shield whoich pressurises its cabin to prevent outside air entering, like a pane. Approx 20% is cycled ive read