I ran over a rock on the highway and apparently it hit my Fujitsubo mid-pipe (The part that looks like a tube or cylinder). I dont think that the rock made any holes. But what I'm worried is that, will the dent effect the airflow? Will it decrease the car performance? it's a good size dent.
Thanks guys for your feedbacks. I'm going to get it checked soon though.

 

Can you take a picture of it?

 

sure.. I'll try to post a pic soon. The dent is about 1-2 inch deep.