Hey everyone, I just got a 2000 Chevy Impala with the 3800 for a winter beater and I’m having issues diagnosing this issue. No engine codes being thrown and I just replaced the fuel filter and verified that my Fuel Pressure Regulator is okay. I can also hear the fuel pump priming and working. When I accelerate, right about 2-3k rpms it starts to backfire like a son of a gun and sound almost like fireworks cutting in and out. Like it’s starving for fuel or getting too much and eventually will stall out if I keep on it. Seems to be doing a little better with the new fuel filter installed but still not right, I even had this thing stall out on me and leave me stranded before the filter was done. Once it stalls a couple times it will not stay running again until I go to fire it up later (usually the next day). Help would be greatly appreciated on this problem, before I go replacing the fuel pump assembly. Fuses and all that were checked as well. Only thing I have not done is pull the injectors and clean them. I wonder if I could get by with running fuel system cleaner through it and see if the problem fades?