Hey guys, I have 2010 srt8 and it's running funny. While idling(cold) I barly press the gas and the RPM's will drop below 500 and bounce up to 1000 over and over. Now last week I had a cylinder 2 misfire so I replaced the 2 plugs and it ran fine until today. The part that confuses me is that it's not throwing any codes.... I'm leaning toward maybe a bad injector but I would think It would throw a code. It's still under warranty but I can't get it looked at till Friday so if I can fix it before then, that would be awesome. Hope you guys can help! Thanks, justin.