uh oh popping
Also does it do that under part throttle but not wot? if yes then I would say the o2 might be a possibility.
If it does it under all throttle conditions, then it could be any number of things, possibly ignition (opti, coil, plugs, etc.).
Does the problem worsen when the car gets to operating temp? Has any liquid been near the opti? Are your wires on right, not crossed? Catalytic converter in good shape? Old fuel filter?
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