whenever my car starts to warm up it starts doing this lag. no turbos mainly stock. When i take off in first it lags back and acts like it wants to stall then suddenly all the power kicks in. I know its not the ca, and i just replaced the o2 sensor.

Thats what i was thinking. I was also thinking it could be a foul on the plugs. I replaced them but it still happens. I found one with oil on the tip and 1 or 2 with oil around the thread.