Lexus Uz 4L V8 - What Do I Need To Run The Stock Ecu?

[MadBuggyofDoom]

Hi all, looking at transplanting a UZ engine into another vehicle, as I know the engines are pretty well designed and strong from stripping a couple previously, however, is it possible to run these on the standard ECU out of the car, if so, do I need the ignition barrel/immobiliser, etc, etc? If not, is there a proven plug 'n play alternative/piggyback for them or will I need a full blown standalone ECU and custom loom?

[ColinBarber]

It would depend on age. Older 4.0l from early LS400s which have a separate alarm system are ok but newer ones have the immobiliser built into the engine ECU and therefore you need the keys and the ignition barrel/sensor.

[MadBuggyofDoom]

Okay, makes finding a low milage one a bit more interesting then :D
Is it just the barrel and keys with the later ones, no other modules needed?

[ColinBarber]

It is the whole ignition switch assembly, there is a transponder coil around the barrel and an electronic amplifier which it connects to. The following is from a GS430