[Robinus]

I have fitted a Caldoofy intake because the original one was unnecessarily complex with lots of different size resonance chambers when all it needs is a straight pipe.

I believe it was designed like that to reduce & minimise the s/c whine.

 

[Robinus]

Apparently the only time warmer air gets into the airbox with the flap removed is at stationary or walking pace. If the airbox is the same as the STR, it's a very good design according to Count Iblis.