According to this Months Car and Driver, Here is the text:
Ford will offer a package for the Boss that adds to the power-train control module (PCM) a racing-specific tune borrowed from the race-ready Boss 302R. The software pack comes complete with a separate key for activation, Ã* la Bugatti Veyron; inserting the red-label TracKey switches the engine computer to track mode (“TracMode” in Ford-speak), affecting things like throttle sensitivity, cam timing, fuel, spark, and off-throttle deceleration. The TracKey package also adds a two-stage launch-control system like the one used on the Cobra Jet drag special. Ford sees the two-tune strategy as an advantage over aftermarket chips which might make a car unsuitable for daily driving—plus you get to keep your warranty intact. The package and its double-down PCM don’t come installed from the factory but must instead be added by a Ford dealer after the buyer takes delivery.
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