ok I went through last time and failed for high NOx.. from what i read its caused from high heat in combustion chamber... soo i went back to the stock coil, and wires. drained and cleaned the rad, then put new plugs and air filter. and sea foamed soo i went from passing CO% and HC but failing NOx @ 2566 almost a 1000 over the reading down to 495 1000 below what they are looking for but now my HC And CO% are slightly higher than normal what cha think?