Originally Posted by B&W_Evader

To get it to start, try disconnecting the Air Temp Sensor in the Air Filter box. If it's reading too hot it won't start. (it either cuts fuel or spark, not sure which) Don't know where it is in the 370z but if you can't find it, pop the air filters and look for something sticking in the box with wires connected to it. That should be it.

Check engine light should come on. If it doesn't it probably means something's been bypassed in the ECU. Tested this Out by pulling a CPS sensor. she threw a Code for the CPS after cranking.

I usually connect it again once it's going but I've skipped that step for multiple thousands of miles.

Also, any way to get a sock Nissan flash back in her (by stealership). That way you can be sure no one has been tweaking it to cheat stuff
The Nissan dealer was the one that performed the flash. the dealer I bought my car from sent it down the street (its like 5 dealers all in a row)in fact my dealer gave me the service manager's phone number over at Nissan to call and he will troubleshoot it over the phone. which is kinda unheard of...but everyone i've talked to seems to think its a simple issue like a sensor or something. I tend to agree .