Thanks in advance.

 

It is there to vent excess pressure that could build up in the air box from the ABV and CRV.

 

the infamous hose to nowhere

 

Yeah, it definitely goes to nowhere...

Thanks guys

 

There is a muffler built into the air box to quiet the hose that dumps the excess air pumped by the air pump. (Note the reports of duck noises for aftermarket intakes, when the air pump is still in place.) That hose is just the outlet for the muffler. It just hangs off the air box, with nothing connected on the other end.

-Max

 

If you vent the ACV dump to atmosphere, plug the enlet and outlet tubes for the built in muffler, and cut out the muffler, you will improve the breathing capacity of the filter.

Look at the space the muffler consumes of the top and how it distorts the air flow around that area before it goes to the turbos.