Thread: BCU, ECU & TCU for 4.6 from USA

The eBay listing states w/SAI. Given Mark's comments I'm thinking the W stands for without rather than with.

Also, the seller is in South Carolina which is a state that does not require any smog or emission inspections on cars. So I might be lucky!

Due for delivery between 27 April and 10 May.

I'll let you all know the outcome.

The parts have arrived and the transplant is done. The new BCU has fixed the passenger window issue.

No issues except I can't get the BCU to detect the key. I copied the code from the old BCU and it will sync it but not detect it.

Anybody got any idea why that is or a fix?

Cheers

All fixed!

Seems 5mins wasn't long enough for the BCU to connect to the ECU.

Waited 15mins and all is good.

Cheers

so it now has the standard LR 4.6 fuel map?
great,, are you running the 4.6 RR airbox lid and MAF?

Correct Pedro, 4.6 fuel map and no I haven't done the MAF or the lid.

Put the 03 instrument cluster in today and drove it to pick the kids up from school; very nice

Most bizarre thing is it's running cooler. Not sure though if that's because of the transplant or the work I've done on the extractor ports.

The ECM will be expecting different readings than its getting from that MAF, I would think your exhaust pipe will turn a nice black colour.
The 4.6 airbox lid and 4.6 MAF does make a difference

Yep, working on that Pedro.

The plan is to buy a knockoff MAF from China to suit the 4.6L Discovery (part number MHK100800) and swap out the sensor if/when it fails.

I'll have to make up new pipes to connect it up as well.

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.