Don't really know whats wrong

Hey, I'm not sure *if* there is really anything wrong, but the car just does not feel right. The car, even as slow as it is, feels abnormally sluggish. When I'm in low RPM's (around 1200-1700) I can hear the exhaust like, popping in a way. Is this a possiblity of a misfiring valve? Spark problem maybe?

Also, sometimes when I'm at a light the RPM's will begin to drop, and the car seems like it wants to stall. It never does, but it sputters. Any opinions/ideas? Thanks alot.

sounds like plugs / wires, or an air metering problem

When first starting my car, the exhaust "pops" a little....it's hard to explain. If I turn the stereo off and just sit there as it idles, I can hear it. After it warms up, I don't hear it anymore. Maybe I'm just hearing things. It dosn't affect my 420A performance though lol.

I know it's not plugs or anything ignition related.