What do the pipes, that are part of the cooling system, do that go to
the air filter box?

I managed to snap one, the one that has the part where the pipe
connects on the top? I've managed to put the pipe over the hole and
fix it on useing the clip, and it seems fine, it doesn't over heat,
there isn't any leaks and the temp gauge stays at normal operrating
temp.

But, I'd obvioulsy like to know what these pipes are for, and why they
go in to the air filter box?

Thanks