Are there any user-installed mods that have been proven to significantly reduce the drag coefficient of the Model 3 Performance

Unplugged Performance Aerodynamic Upgrades

Unplugged Performance, a Tesla tuning company, developed a series of three products that were validated through CFD simulations to provide a 21% total reduction in drag on the Model 3[1][4]:

1. Front Lip Spoiler: Reduces drag by 6.6% and improves front downforce by 35.4%[1][2]
2. Rear Spoiler: Reduces drag by 6.3% and increases rear downforce by 83.7%[1][2]
3. Lowering Springs: Reduces drag by 8.1% with a 1.5" ride height drop[1][4]

Combining these three mods, Unplugged Performance was able to reduce the Model 3's drag coefficient from 0.23 to 0.181, a 0.049 improvement[1][4]. This translates to a 13.3% efficiency improvement at 70 mph, adding 43 miles of range to a Long Range Model 3[2].

Other Aerodynamic Improvements

- Removing the side mirrors can reduce drag by 2.8% and lower the drag coefficient by 0.006[1]
- The new 2024 Model 3 Highland has a drag coefficient of 0.219, the lowest of any Tesla model[5]
- The most aerodynamic production car is the Lucid Air at 0.197 Cd[5]

In summary, aftermarket aero kits like those from Unplugged Performance have been proven to significantly reduce the drag coefficient of the Model 3 Performance by up to 0.049, resulting in measurable efficiency and range improvements. However, the new 2024 Model 3 Highland already has the lowest Cd of any Tesla at 0.219.