Could be MAA sensor, ask them at the dealer to read you the codes they pull. Then come back here with the codes and the fix they recommended.

Could be your ignition high-tension wires are kaput.

Also - a liitle tip that may or may not reveal the problem - when it happens check your tach. If the tachometer falls to zero instantaneously electrical problem, If the tachometer reacts, if it reacts at all, by dropping incrementally it is a fuel delivery problem.