i recently lost my key that had the rfid chip in it and my car wont start now i found another key it turns over but wont start i have a 07 350 z the security light stays red wgen i turn it over what do i need to do

 

Try calling a nissan dealer. They can make a duplicate key. You will need the Vin, and a way to prove you own the car, most dealerships will accept insurance card and your unexpired driver's helps you out.

BTW THIS Ain't CHEAP.