Here's the situation. I have a 98 GTP with a 175,000 on it and i get a blinking CEL when going 60-70 mph. There was a miss at WOT, and I found a bad ign wire on cyl 6 so I've changed everything on the ignition system, new Coil packs (used standard DR39), new ign mod (used standard LX364), new ac delco wires #9726RR, new ac delco plugs #41-101. Now that everything is replaced the Miss is gone the car runs like an animal but the the CEL is still doing the same thing and I'm still getting code P0300. Any Ideas? Fuel Inj maybe??