Maybe this will help some of you out.. just a couple pics from some tests i did on the new aero parts.
on the move
`basically what this shows is that the coupe keeps flow over the top with very very little separation, there is a little bit of turbulence but nothing to worry about.. the spoiler shows very very good attached flow on the underside so that is really going to be creating real downforce.. the diffuser is "ok" there is some separation at the start but it re-attaches near the end, maybe that's the gurney flap on top im unsure.
the side gurneys on the front of the arches visually push air away from the wheel arch but as soon as they stop you can see the chords fold into the arch, i have longer, narrower ones been made so they should provide some nice deflection.
the sideskirts work by not letting air under the car, also you can see the chords are facing straight towards the rear of the car and are not trying to get underneath, the ones on the side do flow under sometimes but most of the time they stay on the side.. this shows that a lower amount of air is entering under the car.