im having a slight prob with my 93 CX motor (with 130k on it). i just need to fix it to pass smog

when the car is cold, it pulls hard. but when it finally warms up, it gets it feels like the fuel pressure dies and it bogs/feels really weak. it also idles a bit rough. When i try to accelerate hard, the CEL (#1 o2 sensor) comes on and the car drives normally again. the exhaust smells REALLy bad sometimes, so i guess theres something wrong with the fuel system? if i dont push the motor (kinda hard with only 70hp) the CEL wont come on.
ive changed the plugs, wires, cap, rotor, fuel filter, o2 sensor, and cat-conv. the wierdest thing is that when i turn off the car, adn turn it back on, the CEL dissapears. i failed smog the 1st time around (b4 the maintenance) with really high HC levles, and i dont wanna fail again.

you guys have any suggestions???
i dont have enough money for a swap yet (thinkin bout a d16z6 to hold me over for a while, b20vtec later) so i need to get this sucker working.