Engine runs fine, no weird noises or anything like that. But when idle it just loses rpms, and stalls after about a minute of sitting idle. I did just get a catback exhaust system (HKS true dual). It starts back up just fine, and I assume it has something to do with the exhaust, since it started after that, but any idea what might cause this?

 

How long ago was you HKS put on?

Did it start dying immediately after the HKS was installed? Never did it before?

 

It was put on yesterday (saturday). Ran fine and never died yesterday. Happened for the first time tonight.

 

I guess I would start with resetting your ECU then driving it around for while. See where that gets you.