Fuel regulator shunts extra fuel back into tank so injectors and system aren't over pressurized,if it isn't working right,car will seem to flood out.If your 'Bird is flooding,you may have sticky injectors staying open.Either run a good cleaner through the system or pull the injectors and inspect the tips.Another problem could be ignition coils not sending enough "spark" to plugs.You have DIS ignition and one of the coils could be weak or out making it seem your "flooding" out.