Long story short: Card died on the highway, I replaced my ID cassette, used properly gapped NGK Resistor plugs. It now runs but no turbo boost. Engine light comes on and the DTCs (P0304 & P1304) indicate misfire on 4. So I took apart the old DI cassette and what do you know? The cylinder 4 coil was covered in oil and there was actually a cracked buldge next to it in the housing. Any ideas? ... at all? I'm lost.
Thanks very much, John Hooven