I believe thats a "silencer".
My theory on intake stuff is that if there is any sort of baffles or ridges, airflow is disturbed, reducing it.
With factory parts I'm not sure you can get rid of that piece, but with some dryer ducting or something I guess you could. Either that or swap to a 4 barrel air cleaner off of an '81-up, if possible. Then you can just run the stock hose to replace the duct tape/silencer in your picture...unless you've also got that weird piece that sits right behind the core support that appears to be some sort of dual air intake setup.