When my car is cold.. like in the morning ... i can turn the key. hear the puel pupm come on, build up pressure and then stop. then i try to start the car and it will turn over and crank until slowly it begins to come alive poping and sputtering and then all of a sudden it starts and i have to help it until the car warms up. once it warms up it will idle fine and drive normal...

i tried the coolant temp sensor. not it.
the bttery has more than enough power
the starter works to its full potential.

any ideas?

 

fuel pump/injectors?

 

wal255 is in the car and stock injectors.. they still work good

 

hmm ok still thinking.

 

check sparkplugs and vacuum lines for wastegate. check fuel filter.

 

Who did the wiring? Check the orange ignition signal wire on the little white plug by the ecu. Make sure its properly connected. When you turn your key this wire tells the motor it is starting and dumps more fuel.

 

MAFS problems can also be to blame.

 

The o-rings on the injectors could also be bad and when the fuel system pressurises it could be flooding the motor. Not trying to sound like a know it all but I've had the same damn problem and it is frustrating as hell. Not good for the starter either.