My mate has a 1600 MK6 escort,
he is now running a 2ltr in it with 1600 managment, so yea it will work
with the 1600 ECU. (he also has unichip though)

NO mate, The 2ltr ECU has a different amount of pins,
BUT you can use the 1800 ECU which is a bit closer..
and what im using (till the new ECU goes in)