i got a crx with zc swap and when i start up the car like in the morning when its very cold it stutters alot, and then when it warms up it drives better. When its warm the car will still do it but not as bad, it will do it if i floor maybe stutter 3 or 4 times. Sometimes not at all but it still feels like sumthin is wrong..Also when the car is just idling sumtimes it will just shut off...sparks are new wires are fine...WHAT COULD IT BE??