have you noticed if your fuel rails lost pressure?? (as in when you go to start your car and cycle the pump, it is not holding pressure)

I had the same problem and it was some VERY LEAKY injectors

I also have a check valve problem in the fuel pump (its gonna go this month)

O2 sensors on my car are SEVERELY FOULED, and are not reading properly at all, however startups are now fine with new injectors.


just a thought