306 immobiliser problem

[somertonautos]

have put new engine in to a 306 dturbo, M REG, car wont start due to immobiliser, if i put a screwdriver on the starter motor it wants to start but doesnt, if i turn by key the blackbox behind the battery clicks and a click from the rear of the car somewhere.

Car is sold, but need to get this sorted, how do i bypass it, something to do with running a live lead to fuel pump?

Also any photos would be of help etc!
Thanks alot

 

[somertonautos]

the car has a lucas fuel pump, ive also tryed a different blackbox with fob and still the same

 

[obi_waynne]

Did you change the ECU with the engine? Was it the same engine before?