BCU, ECU & TCU for 4.6 from USA

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Originally Posted by Mark Adams

If you want to tell me what the software version is in the ECM (looks like NNWnnnnnn), then I can probably tell you the configuration. I have already seen over 150 versions of the Disco 2 software.

There is also plenty more information available from the original chassis number for the ECM, and if you would care to share that too then I can feed it into MicroCat and see what comes out.

As far as I know, all 4.6 Discos had four Oxygen sensors and were automatic. Nearly (but not quite - thank you Jafir!) all of them had SAI too.

Whatever you do, don't use a junk copy MAF. Genuine items aren't that expensive, and I have never seen a pattern one that is even close to the correct calibration.

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Hi Mark, nice to hear from you.

Here are some numbers from the ECM:

NNN100640
Bosch Software: 1037351818
Production Number: 000033420
Revision Level: 26RT5475

Don't have the original chassis number.

The ECU come from North Carolina which I believe is one of the few states in the US that don't require emission tests on their cars.

Thanks for the tip regarding the MAF. When it arrives I'll swap out the sensor and just use the larger housing. It was only $31 US delivered from China. So, it's bound to be crap.

The car drives much better. Feels more like it use to when I had the engine in my Range Rover with your 4CU Tornado ECM and the Jag airmass meter.

Cheers

Whats the part number of the sensor Battler?

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Originally Posted by Battler

Hi Mark, nice to hear from you.

Here are some numbers from the ECM:

NNN100640
Bosch Software: 1037351818
Production Number: 000033420
Revision Level: 26RT5475

Don't have the original chassis number.

The ECU come from North Carolina which I believe is one of the few states in the US that don't require emission tests on their cars.

Thanks for the tip regarding the MAF. When it arrives I'll swap out the sensor and just use the larger housing. It was only $31 US delivered from China. So, it's bound to be crap.

The car drives much better. Feels more like it use to when I had the engine in my Range Rover with your 4CU Tornado ECM and the Jag airmass meter.

Cheers

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Thanks for the kind words, and the info from your ECM. I guess you read that out with a Nanocom or similar? The ECM does actually contain the Chassis number, and the NNW software number for each time it has been programmed. It is in there, but it looks like the tool cannot read it out.

By now it should be filling up with fault codes too, so I wonder if you have seen any?

The reason I ask is that Revision Level 26RT5475 is usually (but not exclusively) associated with software version NNW503940, which is 4.6 Automatic, SAI, DMTL, Advanced EVAPS, and 4xO2 sensors.
(SAI = Secondary Air Injection, DMTL = Diagnostic Monitoring for Tank Leakage, EVAPS = Evaporative Loss Systems).

Please let me know what you find. :)

I read somewhere that some double O2 sensor (non SAI) 4.6 ECM's made it to the USA,,

I did ,, honest!
but I think a Lotto win has nothing on finding one,,

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Originally Posted by Pedro_The_Swift

I read somewhere that some double O2 sensor (non SAI) 4.6 ECM's made it to the USA,,

I did ,, honest!
but I think a Lotto win has nothing on finding one,,

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As far as I know, there were a (very few) non-SAI 4.6 cars, but they all had four O2 sensors.

I am currently doing a lot of work on deleting the unwanted bits (SAI, DMTL, 4xO2) and having some success with it. Some of my friendly clients are already testing this for me, and so far - so good! Hopefully it will be ready for public release by the end of the month (don't hold your breath though, as it is fighting back). ;)

Regarding the MAF Part Numbers:

Disco 2 4.0 Litre only:
Bosch: 0 280 217 532 LR: ERR 7171

Disco 2 4.6 Litre only, and all P38 RR:
Bosch: 0 280 218 010 LR: MHK 100800

Quote:

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Originally Posted by Pedro_The_Swift

Whats the part number of the sensor Battler?

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Here it is Pedro: 0280218010 MHK100800.

And here is the link on eBay: MAF Mass Air Flow Sensor Meter for Land Rover MG Rover 0280218010 MHK100800 | eBay

Cheers

Thanks Mark,

So far only two codes:

P01117 and P00000.

But I've only done about 20 miles in it.

Today I'll be driving it a lot further and maybe more codes will pop up.

It does drive very very nice though, big difference in power particularly lower down.:D

Cheers

:cool:
a lot of members complain about the lack of power in the LR V8,, but nobody else builds one with as much torque off idle as a Thor. Mine will happily tow the van at 1900rpm,,

Quote:

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Originally Posted by Pedro_The_Swift

:cool:
a lot of members complain about the lack of power in the LR V8,, but nobody else builds one with as much torque off idle as a Thor. Mine will happily tow the van at 1900rpm,,

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i also hear quite often people say the 4.6 ****s all over the 4.0.
it's only 15% difference in displacement but its the key. going from slightly under spec to loads of wiggle room.
LR always put in engines that were too small.
most diesel 4wd's were 3.0-3.6. LR used 2.5.
most petrol 4wd's were 4.8-4.8 LR used 4.0.

im not counting the 4.6 gems in the RR as the disco was the common 4wd and i feel the 4.6gems is about equivalent to the 4.0 bosch


actually it would be interesting to compare the specs of the 4.6 gems to the 4.0 bosch. technology improvement,etc

Also all the extra capacity is in stroke...and the truth is that long stroke motors are always the way to go for lazy torque. I notice the 4.6 more when fully laden or towing than in normal driving.

There are specs available for the 4.6 Thor because the D2a was sold with it in on the USA. Very good torque figures with that manifold and injection system.

Cheers