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I also have the UP spoiler - I had it painted to match my car.Have the UP - perfect carbon fiber weave, fitment and looks imo. Also reduces drag and increases downforce.
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I personally don't like carbon fiber and have been very happy with this spoiler from Tesmanian Tesla Model 3 Rear Trunk Spoiler
They only have solid black color available, but they used to have it in a handful of colors. Mine is in midnight silver metallic and has been solid for the 2 years I've had it on. It also cost me double what they are selling it for now, so if you want the solid black and like the style you are in luck.
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Also reduces drag and increases downforce.
For the UP spoiler, it really is a modest reduction in drag from smoothing departure airflow, which coincidentally results in a tiny reduction in lift on the trunk. So, for the efficiency spoiler it is technically not “more downforce” but rather “less lift.”Whatever you may think about any particular wing (one came with my TM3P), just beware that the above two goals are mutually exclusive.
Rear downforce is generated by drag. More effective wings will generate more drag.
There are some (performance driving) situations where it's a very good thing for Model 3.
There are many other situations where folks will say the opposite.
HTH,
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