v8 ecu, help!

Chaps and chapess's, i am replacing my knackered 3.5 efi v8 lump with a 1994 disco 3.9efi v8. its all going back in my defender 90 and going well ish.
When i bought the engine i got every thing bar ecu. Now ive been told by a few that any 14 cux ecu will fit and all i need to do is replace the resistor in the harness so as the ecu stops looking for cat/lambda.
But there seem to be several different types of 14 cux ecu's.
Can any one 'elp, maybe if youve got a 94 ish v8 disco you could look at the part no on the ecu for me?
Cheers Nickvh

Hi, 3.9 exdisco unit in my 110, came from 96 model two numbers
AMR3242 and symbol like merc star and then 80505 A
HTSH
You will also probably need a speed pulse unit that fits in the speedo cable line as well . I think they come from early inj range rovers. was yours a factory V8 ?

Thanks fella, and i take it you mean was the orig lump factory?
Na, basically a 90 body and chassy with classic range rover running gear ect and engine. A hybrid so ive been told, but she was prof done just had suffered with a clown in city,so never really got used, just abused.
Only had her a few months but am hooked now.
Really thankfull for your help, if ever in berkshire i owe you a beer.
Kindest regards Nickvh

nickvh said:

Chaps and chapess's, i am replacing my knackered 3.5 efi v8 lump with a 1994 disco 3.9efi v8. its all going back in my defender 90 and going well ish.
When i bought the engine i got every thing bar ecu. Now ive been told by a few that any 14 cux ecu will fit and all i need to do is replace the resistor in the harness so as the ecu stops looking for cat/lambda.
But there seem to be several different types of 14 cux ecu's.
Can any one 'elp, maybe if youve got a 94 ish v8 disco you could look at the part no on the ecu for me?
Cheers Nickvh

Click to expand...

The part numbers for the ecu did change I think there are 3 or 4 but the internals are the same. The original part number on my '91 3.9 Classic was PRC7081. the original unit had a socketed chip and went west, so I put in a second hand ecu and got a spare just in case. The spare unit is a later one, part number AMR1424, it runs just the same, the only differences I am aware of is that the later one doesn't have a socketed chip and the outside casing mounts are slightly different.

With regard to the resistor, I seem to remember this is listed as the tune select resistor, for EU and UK, non-cat you want the one with the green wire, 470 ohm.

Hope that helps.

Kev your a gent, thank you.Nickvh