Will Macca's 'Macarena wing' give them a pace uplift at Monza?

[John S]

Even McLaren are unsure how it will fare at the temple of speed so it's more testing
in practice sessions to see if their 'H' wing will finally cut the mustard. 

I just wish they'd use it in anger rather than teasing us all the time.

https://f1i.com/news/571821-mclaren-unleashes-new-h-wing-as-monza-hat-trick-beckons.html