A new front wing was tested in Barcelona on February which has a bit larger endplates and also the space between the second flap and third flap tip has been increased by little. Small revisions may improve only by a small amount car’s performance but launching constant even minor changes in almost every race can give the car steadily significant speed. That kind of approach was followed by Renault last year especially about front wing development, a trend not surprising to see it repeated this season as well.
Thanks to bar555 from formula1techandart.wordpress.com