My car begins to sputter, low rpm, and loss of accel when its idling or when im accelerating.
I change the egr valve
fuel injectors twice
fuel filter, strainer, pump
i got a new cat convertor
i had the sparks and wires changed in September
i use all the top fuel injector cleaners...Heet, Gumont, and Techron

 

did you replace all of those items yourself with your own hands? If so, why?

If not, why did a mechanic do it?

What was the issue being addressed when all of those parts were tossed at the car?