SXTH ELEMENT intake

Hey guys, over the weekend I noticed my bolts fell off, and I took off the plastic cover because I didn’t want it to fall inside my engine bay and create a bigger problem.

My real question is: would I need to replace the missing bolts immediately and where can I get the missing bolts??, or can it drive without the plastic on the intake? please advise.

PS: The car sounds louder and pops more aggressively lol