Post by
sapix @ RHIT »
https://forums.nicoclub.com/sapix-rhit-u1947.html
Fri Nov 15, 2002 4:22 pm
Nearly any spoiler you buy aftermarket is for looks. Some may add downforce, but its not going to make a huge difference, You may feel it at high speeds, but you aren't going to be turning at high speeds. Also, adding a wing in the back and not doing anything to the front to increase downforce will throw the balance of the car off and make it handle funny.
About the lip spoiler, some of these types of spoilers do actually do something. Higher pressure air gets caught here and hangs out over the trunk, while pressure decreases around the car, the high pressure just over the trunk will push the car down, just like a wing. Again, it has to be properly sized and tested for it to work properly, and it is doing something, it is throwing the balance of the car off.