When your 2001 D2 starts to feel like a bucking horse, and feels like starving of fuel, chances are your ignition wires are old. I had the vehicle for over 2 years, and after changing all the fluids and plugs, I was holding off the wire replacement until late summer. Now being the fall, and with these symptoms, the codes came back to the point that 3-4 out of the 8 wires were sparking bad. So replaced the wires, valve cover gaskets, plenum gasket and PCV today. I think I am good, but I know bloody well that I have to replace the tires before the snow hits here on Vancouver Island, British Columbia.

 

Yeah... I've been putting off replacing my STI ignition wires for some time now.
I've been monitoring my engine with my Nanocom and it's been showing zero Misfires on the cylinders but shows Roughness between 2.3 and 4.7 on all cylinders. I've read that means either the coils and/or the ignition wires and/or the spark plugs are bad.