my money is on cam sensor or egr valve,
if the glow plug light is illuminating usually egr valve,
simple way to bypass to test is, cut a coke can ends off, fold thin metal in half, (minding edges -very sharp!), undo 10mm nuts on one end of egr tract and slip in can.
the egr valve will be forced open/closed under harsh accelerating so should be able to see if fault reoccurs.