The only way is to not use the stock MAS. Options basically include MAFT or VPC, or a standalone. Hard to justify the cost and complexity if you just want to make it louder. With some creativity and knowledge of the pressure/electrical systems I was able to get the car to run well enough vented that I ran that way for a couple years. But there is no way I could even begin to cover that topic here, it would be the long post to end all long posts...
It really is easier just to leave it recirculated and try to make it louder by other means, like hard intake pipe, large open filter, etc.