sygjim i was going through my emails the other day and recognised your name from when i bought a 3 bar map sensor off you from ebay some time ago.

for a 4x4, if it's a red top model, you will need the lambda sensor wiring up to the ecu, but you can do that yourself. then all you need is a chip from either a green top ecu if you only want a standard map, or you need one from stu or elsewhere that has the closed loop routine written in to it.

stu has a winter sale, see his post in the general section. £220 for a L8 closed loop chip.