6/21/2023 0 Comments 2015 sti wing downforce![]() If you want your front end to go down and you want to do it with aero parts the STi oem stuff (EGR front lip, various other STi lips) are the only ones that have certifiably gone thtough any kind of aero testing. ![]() They're not attatched by anything stiff enough to provide a lot of downforce, their primary purpose is deflection of air over the wheels area for cars that have retardedly wide widebody kits like touring cars. Most body kits have zero wind tunnel development however, so your guess is as good as anyone's as to whether or not its helping or hurting. The EGR OEM kit actually works well for aerodynamics as it has strakes for all wheels and the front lip is made to fit a splitter in under the engine. There aren't that many body kits actually designed to do this though., most are designed to look a certain way. It will deflect more air that would have normally been under the car, and strakes on the front can help deflect air around the dead zones around the wheels. A basic decent y designed fromt lip does quite a bit.
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