The old TPS has been thrown out, and the new one elliminated the code, as for the ignition wires, I just checked and #2,4,&6 wire and they are not touching the O2 sensor I also I could not find any arching. The wires on it now are AC Delco, but I also realise that my diagnoses doesn't mean that the wires are still good. I will order new ones, but in the mean time, could it possible be anything else?

Frank, I have the exact same issue as you do....seems to run fine around 100kp/h and above and as soon as its in the "cruise" area speeds of 80-95km/h I get that slight "chugging" and can see my boost guage jumping up and down a bit. Once I give it some gas it goes away instantly. I have a new coupler which I was about to put on but now that I've read this post I'm not sure if that is the problem :( I don't think I saw it but have you changed your fuel filter? My 95 SSEi has 394,000kms and I'm not 100% sure when the previous owner from Toronto changed it so I'm going to give that a shot too. Keep us posted

Yes I have change the fuel filter. I didn’t think it was the fuel filter since, it'* not happening when I accelerate. You would think that if it'* a slightly clogged fuel filter is would be starving for fuel when you accelerate. I just thought I would mention that by boost gauge didn't jump up and down a bit before I changed the coupler and it'* still not jumping up and down.

Thanks for the comments.