Ferrari, Renault, Mercedes and Red Bull were among the teams who tested significant upgrades on their cars in the first two practice sessions at Valencia.
While Red Bull tested their version of McLaren’s F-duct three of their rivals tried to run exhaust-driven diffuser similar to those on the RB6.
Have a look at the revised cars and more pictures from the first day’s action at Valencia below.
Images (C) Ferrari spa, Bridgestone/Ercole Colombo, www.mclaren.com, Getty Images/Red Bull, Force India F1 Team, Williams/LAT
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