Lancia made many changes to its homologated hatch for the ‘Evo ... the rear, and of course with no fuel bills to worry about, to exploit any gains, but that was hardly the point. The spoiler ...
To evo, the right rear wing or spoiler is an intrinsic part of the car it's attached to. For some cars, it's so integral to the vehicle's styling and dynamics that it helps define the car itself.