all your plugs were checked as well?? there is no mis firing coil or plug, plug wires and fuel pump are ok??
last time i faced vibration at acceleration it was due a coil which malfunctioned after engine cleaning through pressure wash at a service station.
get your coil, plugs and plug wires checked and if they are ok than check fuel pump.
Also b sure that throttle body and maf sensor are ok and working as desired.