umm all those reasons actually 
There are no cats (pacesetter lts , TSP Ory , O2 sims), no air, no egr, the pcm is tuned no SES light, passed last year under the same conditions, my hook up moved shops and dosent have a NYSI computer at his new shop
And like I said everything else passes, having new tires (Goodyear Eagles front and MT ET Streets rear) put on tomorrow, even the parking brake works