My car was sitting in the garage for two months un-driven. I went to start the car and the battery was dead, so i jumped it.

The car had previous idling problem (that never affected the performance of the vehicle just the idling) but I went to give the car some gas and i heard a pop. When i parked the car i did run the gas completely out of it.

Now has new 91 octane gas along with LUCAS fuel injector cleaner. I also went through what steps I myself knew could cause a problem especially due to sitting for months. Which included new plug wires, new plugs and a new battery(also changed oil).

Now the problem Im having is the car will run but when i put it under a load.. like giving it gas it runs through the rpms extra sluggish. It still gives a pop almost like before.

Is it starving for gas? Not the right mixture of air and gas? Im not the biggest tecnician and honestly have no clue what to check from here so all help or even "shot in the dark" opinions are overly appreciated!