You arent helping us here, you wouldnt walk into a shop and say "hey, my car don't run. Can you fix??? Here are the keys and call me later, thank brah
We need to know other things too.
What brand plugs, what gap. What kind of fuel you run. New factory coils and ignition control module?
Why hasnt this shop even done testing yet. Why arent they looking on the scanner to figure out if you have an injector dying off, or if you have a voltage issue. They should be swappng plugs around, moving injectors around, moving wires around. Pulling ack the harness to figure out if something is wrong here.
My last ditch effort would be to replace the PCM.
