You have checked the MAF sensor wiring?! At the plug it may appeared to be secure, but for some reason it may not be getting good connection. Last time I had no start, I wiggled the wire at the plug and it fired up. It did that to me more than a couple times. Each time I messed around with the intake I had this problem. Apparently, for the NB that pug is very sensitive if you are not using the OEM airbox.