The reasons to remove this stuff are:
1. To make it look better. Doesn't apply to a slant six, unless you are hopping it up.
2. To increase power/mileage due to the junk they put on. Doesn't apply to the pulse air system, does to the EGR. Make sure the PCV is working properly.
3. If the parts are broken and you don't want to replace. Doesn't apply to the pulse air system.
In other words, just leave it alone, unless it's making a racket or leaking.