Ok... So what's the black hosed cylinder attached to the left side firewall under the bonnet? Also, you said black pipes, but all I see is black tape around the header section of some stainless pipes. Wuzzup?
Sorry, I hadn't seen the other post with the description and pictures. Didn't mean to be redundant. Good guess on my part though.
The black tube appears to be the air filter housing. You can see the air inlet to the right side with the black hose and then the two "Y" inlet pipes on the front outlet side of the air cleaner housing. So much plumbing has to slow the air down and will probably hinder motor output a bit compared to the direct mount air cleaners currently used elsewhere.
Nice looking M3W none the less.
Hope you get many happy smiles... I mean miles!