Thread: D2 4.6 conversion owners. 4.6 ECU swap & EOI.

So I assume Bosch Motronic?

Surely the Bosch is closed loop with knock sensors as well as the normal MAF stuff?

It's got the knock sensors but watching the nanocom they don't really seem to cut in until 1800-2000rpm. Under load, such as accelerating from lights on a hill and such where you don't get to build revs unless I'm running BP 100 or Shell 98 it pings worryingly. On flats under load (such as towing) it's ok but I'd rather get it right. Have swapped out sensors to no avail. While it (and many other incl people in the US who have done the swaps) copes under the 4.0L management it is leaning out when you stick an analyser up the back. It runs both open and closed loop modes, depending on warm up status and MAF status (running constantly in one mode is a sure sign of a faulty MAF from experience.

For the price, there doesn't seem to be much to loose, and I can ship 2 for the same price as one so I thought someone else might want to "upgrade" as well. Either way I'll be reporting results of pinging, general running and most importantly economy.

There are a few out there,, just the TRS customers alone--

might make a good tutorial or TGO post

Originally Posted by clubagreenie

I have spoke to a supplier who can ship 4.6 D2 ECU's for around $200- Aud landed.

Looking in the catalog there are only two NAS ECU's, one for Secondary Air Injection and one without. So over here the same computer would go in a 4.0 or 4.6. I'm pretty sure the 4.6 is just set through a fuel map program.

I'm pretty sure something from black box solution could switch your ECU to the 4.6 mappings, assuming that land rover put it in there.... which there is a good chance that they did. On the old D1 here with the GEMS computers, the 4.6 program was an option, even though there were never any 4.6 liter Discovery Series 1.

This post (at bottom) says test-book can change it--

d2 4.6 swap

you out there Blknight??

But look where that forum is based, NAS where they had 4.0 and 4.6 D2s. There may be some merit exploring it, nothing to lose apart from a bit of cash for a test book looksee but from memory, reading RAVE on page 18-2-6 it says that the ECM holds both tunes but whether that is a NAS testbook setting or not needs to be explored.

IIRC,, Blknight has one,, and Ron

Ron as in out towards Penrith, approx 20 minutes away Ron?