2005 starting like 1980

i just got this 2005 impala and it occasionally starts like a old car. basically struggling to start. they replaced the starter and its seems to do it even more frequently.is anyone else having this problem?

Didn't know it would do that... :confused:

when is it doing it, hot, cold. DETAILS

Honestly it does it warm cold whenever, also if I just play the radio without the the engine running and then start the car it makes a poppin noise.

fuel pressure regulator not getting enough power????