For the S197 Mustang platform, proven aero does not have to be expensive. We install a wind tunnel-tested Steeda wing and a BOSS 302 splitter to improve the downforce of our car.
The Steeda wing was actually the spec-wing for the Ford FR500C and BOSS 302R race cars that raced in the Grand-Am GS class between 2005-2015. I won a lot of races in the No.61 BOSS 302R driving with Jack Roush Jr. for Roush Performance. While at Roush, we had this car in the Lockheed Martin wind tunnel and it was eye-opening to see this $350 wing produce hundreds of pounds of downforce.
The Ford BOSS 302 splitter is a mild but worthwhile improvement over the bare GT front bumper. For the money, it improves the airflow around the front bumper, lowers the front fascia a little over an inch, and creates a protrusion in front of the bumper that creates a high-pressure area and a little downforce. For the money and ease of installation, this is a simple must-have for tracked 2013-14 cars.
The stock 2013-14 Mustang front bumper design was influenced by the 2010 Shelby GT500. Personally, I really like the looks of this bumper ever since we had pre-production versions on our BOSS 302R race cars.
Without a splitter of any kind, the car just doesn’t look as aggressive as our race car and creates more lift. We are about to change that.
Out back, the stock GT spoiler is tiny and while it does reduce drag and lift, it’s not enough to feel it.
The BOSS 302 splitter comes in 2 pieces. The flat under-panel as well as the exterior protruding lip.
Page 1 – Overview
Page 2 – Boss Splitter Install
Page 3 – Installed Boss Splitter Review
Page 4 – Remove Stock Spoiler
Page 5 – Clean Decklid & 3D printed Adapter
Page 6 – Mount Steeda Wing
Page 7 – Review and Aero Insight