On the door panel, it says 09/01 which obviously means September, 2001. If the injector warranty covers 7 years/200,000 mile, does that mean I have till this September for it to run out. btw-only 104,000 on stock injectors. I think three balance rates were a little off from the rest but nothing over + - 4. Its good they have lasted longer than I or anyone anticipated but should I be praying for them to go bad? How come I've seen the replacement injectors wont last half the time the stock ones have?

The seven years starts from the in service (original purchase date) not the build date. Run your Vin on the Vin check forum and find out what that date is.

Why some guys have gone through multiple sets and others have not is not really known.