As we see many new ideas such as the Eventuri. I like to introduce my solution for sufficient air flow.

 

a video about E Venturi ,

to make a long story short, the additional functional scope pulls air out the engine compartment ( Common knowledge R56 Challenge ) .

The open E Venturi is slower than the original setup

https://www.youtube.com/watch?v=Znrv...hwtKCJdFLWI4UA

 

I don't speak German and it's pretty tough to see the numbers on that little green screen so please bare with me if I get something wrong. It looks like on the first run the 80-150 KMH time is 7.5 seconds, second run is completely illegible, and the third run after duct taping the intake shut is 7.1 seconds. It also doesn't look like he's driving the same stretch of road for all 3 runs. Not sure I'd call this video conclusive but it's certainly interesting.

 

7.5 is stock Airbox
7.1 E Venturi closed air scope

in between E Venturi open air scope tries slower than stock.