v8s ecu

[tinks v8S]

is the ecu on a1993 v8s the same as a chim pre cat
garage put a91 land rover on and now runs

what is the differance

anybody got 1

[Barkychoc]

The TVR one has been alledgedly fiddled with to get more performance.
If there are any numbers on the ECU it would be worth comparing them with the chim one.

Nice to hear you're getting closer to fixing it anyway.

Chris

[pies]

I fairly sure this is what you need best get somebody to confirm though ,you may need to swap the chip over as well

http://cgi.ebay.co.uk/Range-Rover-Discovery-ECU-3-...

[GreenV8S]

tinks v8S said:

is the ecu on a1993 v8s the same as a chim pre cat
garage put a91 land rover on and now runs

what is the differance

anybody got 1

It's the same as a chim pre-cat or chim post-cat, depending whether you have cats.

Basically one is configured to run in closed loop mode using the lambda sensors, the other runs open loop.

Yes.

[tinks v8S]

as chris says has the 1 out of a tvr to a range rover
been played with or are they all the same
just plug and go
garage as lent me this to see how it runs

[GreenV8S]

tinks v8S said:

as chris says has the 1 out of a tvr to a range rover
been played with or are they all the same

The TVR one has a different chip, to suit the different engine and transmission characteristics. Other than that the TVR one is the same as the RR Classic 3.9 hotwire ECU - Lucas 14CUX.

[pies]

GreenV8S said:

tinks v8S said:

as chris says has the 1 out of a tvr to a range rover
been played with or are they all the same

The TVR one has a different chip, to suit the different engine and transmission characteristics. Other than that the TVR one is the same as the RR Classic 3.9 hotwire ECU - Lucas 14CUX.

im correct then,for once

[Barkychoc]

Tinks look at this link

http://www.britishv8.org/Articles/Rover-14CUX-EFI....

Under 'The Control System' further down is details of the chip that needs to be swapped over with the little white sticker on it.

If you're not confident doing this I'd get a TV shop or other electronic repair shop to swap it over for you - it is quite easy to break one of the legs off the chip and then you're really stuffed.

I think it is possible that your replacement ECU may not have a chip socket - it may be soldered in.
Again the electronic repair shop if they are any good will be able to remove the range rover chip (doesn't matter if they wreck it) and fit a socket for the TVR chip.

Chris

[GreenV8S]

Barkychoc said:

Tinks look at this link

http://www.britishv8.org/Articles/Rover-14CUX-EFI....

Some useful stuff there, just be aware that not all of it is completely accurate as far as I remember.

[Barkychoc]

GreenV8S said:

Barkychoc said:

Tinks look at this link

http://www.britishv8.org/Articles/Rover-14CUX-EFI....

Some useful stuff there, just be aware that not all of it is completely accurate as far as I remember.

Well it wouldn't be any fun if we had accurate information would it Pete?

[tinks v8S]

may have 1 from a v8s
other than that i may get 1 of fleebay , and take it to be chipped or see if the 1 in my old 1is ok
ran it on the drive for a while ,seemed ok
if its not raining tomorrow will take him out

[tinks v8S]

taken him out and he ran fine
sun is out so will take a longer run to see what happens

[blitzracing]

There are various revisions of 14cux out there, and although they are all plug compatable, I have found the fueling slightly different with a TVR chip that runs perfectly in a 1992 ECU, produces flat spots in a 1990 ECU, but I dont know why. I know the hardware and software has been changed many times over the years. If yours runs fine then great, but be warned the origional Range Rover mapping run pretty lean above 4500 rpm, plus a rev limit around 5200-5400 rpm, so tranferring to another ECU, using the TVR chip is a must.

Mark

[TJC46]

Tinks have you tried DOUGLAS VALLEY BREAKERS in standish wigan. I dont really understand all this ecu talk but i know they have quite a few chims and griffs in stock. Cant you use the ecu from one of these Tom.

[tinks v8S]

no i cannot tried 2from a chim and would not run
somebody said to day, ecu are not the same 1 is set for 3am and other 5 am
my air flow has 5 am on it
how will i tell what ecu is set up for

may have 1 from a 92 v8s fingers crossed

how are you now you have 8

[Barkychoc]

Tinks if you have a pre cat V8 (I think you do) it is supposed to have a 3AM airflow meter, the 5AM one is for the cat model, though the 5AM is rumoured to work on the pre cat worth bearing in mind.

[blitzracing]

tinks v8S said:

no i cannot tried 2from a chim and would not run
somebody said to day, ecu are not the same 1 is set for 3am and other 5 am
my air flow has 5 am on it
how will i tell what ecu is set up for

may have 1 from a 92 v8s fingers crossed

how are you now you have 8

The 3 am and 5 am are basically the same, its just down to if its Hitachi,or Lucas. There is an extra pin on one of them, but its not connected to the internal PCB, and electrically the signal levels are the same. Thers only 4 meaningfull connections, ground 12v, CO trim, and airflow output. I have run these two back to back on the bench with controlled airflow, and found no difference. There is certainly no reason why either of these should not work on a 14cux of any age.

Mark

[tinks v8S]

got the ecu from a v8s has a mark adams chip in it
will not run, over fuels
tried my old one back and car ran on tick over great
will have to have a good run in next few days

Edited by tinks v8S on Saturday 30th August 21:00

[pies]

Has your old ecu got a removable chip

[tinks v8S]

no it has not
the 1 i got to use has but it will not run(mark adams)