Car won't idle, stalls
 

So about a week and a half ago i put on my long tube headers, duals, and some TR-55's. Car has been running great, the SES light came on as i expected. Today I went to the gas station. I cut the car off and filled up, then i got to start it again, and it cranks over fine, then it just stalls. I also noticed the SES light was off. I can make the car idle with a little bit of throttle and it still runs great. it just wont idle. Any ideas would be greatly appreciated.