As most know, I had a Pulsar GTi-R a fair while ago. That thing suffered from heat soak far more than my MPS ever did.
On the bonnet there were two small vents either side of the main scoop. They have covers on them originally, presumeably to stop rain.
Once I took mine off, the difference was remarkable. The heat that came out of those vents on a hot day would nearly burn your hand. Probably would if you could hold your hand there long enough.
Its something I've been saying the MPS needs for a long time. Don't worry about trying to insulate the heat or get colder air in, let the heat out of the engine bay
2013 Ford Focus ST - Performance Blue, Cobb AP
Gone 2006 3 MPS Sports - True Red, Koni FSD shocks, in dash OEM look Ebay GPS/DVD, Hypertech, RX8 Rims