Right baicsally, got 2 map sensors from a breakers yard and its still doing it with both

Wont even try and start if u just crank it but with the ISCV unplugged it'll try 2 turn over but wont, if u give it slight revs then it almost starts then dies!! had it rev for a few seconds a couple of times then again dies moreso when u press the throtle

Any other ideas?! thought ECU but wont know till i try another one!