hello,

thank you, just if I can allow me : it is not really good to put the inlet as low to the ground as possible because in some case the tarmac is much hotter because of the sun so the air around it will has less density. and if you are on gravel you will catch lots of dust on you air filter.

My "prototype car" will have a max speed of about 280 km/h ( 175 miles/h) so I could think that the dynamic pressure will be interessant at this speed.

so if I put a duct of 2.8inch diameter which catches the air flow and put this duct on the throttle body. will I increase the pressure in my intake manifold at 175 miles/h?

because the theory of "RAM effect" is that you need to convert the dynamic pressure into static pressure with a divergent. and I use a simple duct.

So if there is no divergent shape, is there ram effect?

is someone who know that? or a book or website which talk about ram effect?

thank you