McLaren is set to introduce the second part of its major update at next weekend's Monaco Grand Prix, following a much improved performance at the Spanish Grand Prix.
Its first big upgrade of the 2017 season helped Fernando Alonso record McLaren's best qualifying result of the season with a stunning seventh place on the grid at his home race in Spain. Hopes of taking the Woking-based team's first points of the year were dashed by a first-lap clash with Felipe Massa as Alonso ultimately finished 12th.
McLaren racing director Eric Boullier says he has seen enough positive signs from the performance in Barcelona, along with the data correlated with the team's windtunnel and CFD, to feel confident the next part of the upgrade package will perform as hoped.