Batch firing is when all FOUR fire together, ONCE EVERY ENGINE REVOLUTION.
Escort Rs Turbo is spraying a fine mist all the time not squirting there is a massive difference, and this is done every degree of rotation not just a few degrees.
Cylinders 1+4 and 2+3 firing together is NOT BATCH, it is SEMI SEQUENTIAL.
SEQUENTIAL injection is where the fuel is injected according to the inlet valve position, each injector fires in turn ONCE every engine CYCLE.
tabetha