I have a 03 350z touring with just simple intake,catback ehaust, intake spacer. My problem is if you get in and crank it up right away the car just turns over but doesnt start thats all the time. But if i wait for 3 dings and then crank it, it almost always cranks. Yesterday i tried to crank it 5 times and it just would turn over, then finally it started but i had to open the door and shut it then wait 3 dings then crank it. Is there anyone else that has or had this problem? Thanks for the help

 

Is it tuned with utec or osiris tune???

 

Not that I know of. Just got the car about 4 months ago nothing was said about it being tuned. But it's always had this problem

 

Could be the N.A.T.S alarm immobilizer. I know of a few people with random starting problems and that is what was diagnosed. None of them have fixed it - expensive!