I have the DC ceramic 4-1 header... I bought new plugs, the gap is at 1.1, did a tune up, dizzy cap and rotor, msd 8.5 mm wires, new fuel filter, cleaned out the air box, I ran lucas fuel system cleaner through it and I just put in the "Guaranteed to pass smog" thing, tomorrow I will change out my ctr cams with b16 cams... what else could I do?