Quote:
Originally Posted by chicagoisonfire
The 911 spoilers aren't so much creating down-force as they are counteracting Bernoulli's principal. The way the 911 is shaped it creates lift at high speed (much like an airplane wing) and by adding the spoiler it breaks up the line of the car eliminating (fr the most part) the lift generated. If you look at a carrera, they have the pop out spoiler at 60mph+ that is pretty much just to get rid of lift. The turbos, however; do create some downforce, but that isnt their primary purpose.
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QFT
The purpose of the stock spoiler on the MR2, 91-93 at least, isn't about creating downforce so much as it is about preventing lift.