Air vents – bonnet and carbon body vents.

[thexav]

Complete the motorsport look with a vent in the bonnet. These can range from subtle slits to a honeycomb of vents that cover up to 50% of the bonnet area. Popularised in teen tuning films the vents are certainly here to stay.

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[TCJBOLDIE]

But you need to position them correctly as there will be hi and lo pressure areas of air flowing over the bonnet .So it is vital depending if you want to extract engine bay hot air or introduce cold air into the EB as to where they are placed.

 

[old-git]

Usually badly.