^^ good question...
dren wrote:Sort of looks similar, but the air amplifier needs compressed air to feed around in and around the circumference. It's sort of like a reverse of those Dyson no-fan air movers.
This is how they work:
(pic removed)
I don't think the same thing is going on with the exhaust. It looks more like some expansion chamber or flex joint.
my thoughts is it is a flex joint but in flexing opens up a small hole in the seal of the flex joint. a kind of imperfect flex joint. so under load when the engine shifts slightly a gap opens and air is sucked in by a ventury affect. this way when the car is examinined in park ferme the flex joint looks like a perfect seal and they are not in breach of the 2 outlet rule.
i know this may be utter rubbish since these engines are stressed members so they wont move that much relative to the floor on which it rests but the exhaust is part of the floor in the most recent iteration of their exhaust so they could be using small movements between the exhaust outlet and the headers (the engine and the floor) to create this effect.
one fact is they were running silverstone with no EBD specific engine maps. and they were happy to do so in that they were (with sauber) the ones who objected least and didnt ask for nor recieve concessions for running 50% off throttle maps on the basis of reliability. that makes me think they have something that works like the EBD without the need for engine mapping.
Scarbs posted something like this pre silverstone when the ebd map ban was issued. on page 75ish.
But it could well not be this. it could well be something far more subtle. its going to be interesting to see the performance difference between the F150° and the bulls in GER.
A wise man once told me you cant polish a turd...