[MikeMan]

It could be doing this for a number of reasons. If its only happening when you jump on the pedal it could be:

1) Sparkies. Check these for crud, and that they have the right gap. Easiest problem to fix so might as well start with it.

2) Could be the PRVR solenoid acting up causing the fuel pressure to be too high (flooding the engine)

3) could be the fuel temp sensor giving a false reading, causing it to flood/lean out.

4) could be the fuel pressure regulator causing it to flood/lean out.

5) could be the MAF sensor giving a false reading causing it to flood/lean out.

6) could be the throttle position sensor acting up.

7) Oxygen sensor(s) acting up.

8) Corrupted fuel timing maps in the ecu.

Sometimes these can screw up without the ecu realising. They can all cause this problem too.

You can narrow it down a little by checking the oxygen sensors (if they both read the same then assume that they are both ok)
If they're reading fine at idle then its most likely not a problem with the fuel delivery, and more likely a problem with the ecu maps.

-Mike