BKCivic00

Hello everyone, I recently bought a 2000 Civic before i deployed to Iraq. I End up getting in a Car Accident before i left which end up taking off my front bumper. I Noticed after the accident when my car idles for a minute or two it starts to sputter, thats the only time i have noticed it is when i am sitting for a few minutes. I wanted to get some insight on what could be the problem. I just recently got into upgrading my car and bought a JDM front end conversion to start off fixing the damage and thought if i could get some help i could fix the Sputtering problem while i was at it. So any help will be appreciated Thanks.