Ok, so I've been noticing that when I first start the car in the morning the engine idle is stuttering. Being that it's winter and cold, could it just be because of that?....a cold engine? It's most noticeable when revving it up to 2500rpms. I figured it would correct itself once the engine warmed up but it's still there only less pronounced. Not noticeable after 3000 rpms or highway driving. Only at idle when I rev it. Anybody else experience this "stuttering"? I'll try and post up sound clips.