it is much deeper than that. each time i take apart one section of the fuel system i find more issues. this time i was going to take my injector harness out to look it over. got in my car, started it, drove it to 7-11, then into the garage. turned it off, 30 seconds later went to releive the pressure in the fuel rail. NO PRESSURE! it should be near operating pressure! so that lead me to believe the check valve in the fuel pump is bad, which would also account for the other issues we are having. the check valve basically wont allow the fuel to flow backwards, back into the tank. otherwords, if your car is 50% duty on the injectors, using most of the pressure, the flow will be ok. but if u let off, the pressure suddenly changes, sending fuel backwards, causing the sputtering (fuel starvation) i am going to pull the tank monday, and i will tell you what i find.