Sorry mate don't like the vent at all, if you want to vent the bonnet either take it to cool louvres and get it done properly, i.e. forward facing vents on the RHS (when facing) of bonnet to feed the intake with cold air and on the other side rear facing vents to extract the heat from the engine bay cos the eninge sits over to the left as you know.
This is what i would have done to mine if it was not already vented.
Or do what i was going to do in first place and fit Fiesta RS Turbo vents, which i have now sold.