Engine cuts out during acceleration.

After turning a corner, initial acceleration from a stop or initial acceleration when passing the engine shuts down. It can be restarted while coasting and starts immediately.  This only occurs ocasionally like every 50 miles or so.  I changed the ignition system, fuel filter and fuel pump relay, but no help.  Anybody think the Mass Air Flow unit could be the problem or how could I clean it to eliminate it as a problem.