well - its that time again and the last time (two years ago) my nox out put was 834 ppm with a max of 861 ppm allowed at 25 mph. every thing else is well within specs. that was with a 75mm tb, 76mm maf and 42 lbs injectors plus this vehicle is an auto converted to a manual still using the auto computer if that means anything. i am concerned about going over even tho i only put about 1500 miles a year on the car. my cats and 02 sensors have less than 5K on them. i researched old postings and will pop in a new motorcraft pvc and check for leaks and i dont have an egr (as per factory). i am curious if putting on the stock maf and tb would help any. since that time i also added an apten chip - i was planning on just pulling it -but- maybe leaving it in is a help instead of a hinderance??? any comments or suggestions will be greatly appreciated.