Common ECUs that fault are the Delphi DCM3.2AP, where the dealers will recommend a full replacement new ECU costing $1000-$2000 Keys4Cars can provide a permanent immobiliser off/delete service at a fraction of the price!
Ssangyong Actyons, Rextons & Kyron Immobiliser Off - Delete Services

Keys4Cars do not write a generic immobiliser delete file to your ECU instead we read the original file with specialized equipment and have the proper software to convert your existing data to a non immobiliser file retaining all of your other computers important information to prevent future faults down the track where generic files can have different set ups/programming causing further issues.

Important Steps: 

1. Remove & courier the ECU to us - Located under floor cover/panel passengers side front footwell
2. Before plugging in newly modified ECU you must disconnect the ignition antenna otherwise the immobiliser system will turn back on on the same fault will still be there!
3. Tape over the antenna plug and and note "Do Not Plug In" incase someone own the track finds and plugs back in
4. Some vehicles have no injectors after immobiliser has been deleted, either leave vehicle running for 20 minutes for the ECU to reconfigure and turn all back on or if you have diagnostic programmers clear the fault codes and your off again straight away.