Remapping EU2 motors - a word of warning

I've now been running one of Jose's modified EU3 remaps for a couple of weeks and about 1000km much of which has been country/highway driving. I'm really happy with the result. It's not as aggressive as the Davis chip - at my request - and is really smooth to drive. It's got a lot more poke than the stock map and it pulls like a train on highway hills. :D

The retro-fitting the 4-wire AAP cleared up the last of the fault codes as reported earlier, and I haven't seen any other issues.

Being a curious bugger I've had a look at what the base map is and was a little surprised to find it was a ROW non-ECD3 EU3 motor. From what I can determine these were originally used on the South African delivered D2a's. The interesting thing was that these D2a's came from the factory without the EGR gear installed, hence the "non-ECD3".

Checking out the non-ECD3 vs ECD3 factory maps they are identical in terms of fuel maps, however there is one table which Td5MapEditor shows as "unknown" that is RADICALLY different. I haven't been able to find out what this controls as yet. Note this is comparing factory Euro and ROW maps not factory vs tuned.

http://www.aulro.com/afvb/attachment...1&d=1353994842

Regardless of what this table controls, it seems like using a non-EGR base map is a masterstroke. The clatter that appeared when I removed the EGR gear last year is now gone, and the D2 is much, much, much more civilised. :cool:

All-in-all it's been a bit more of an expensive exercise than I'd planned for, but the outcome has been well worth the money spent.

cheers
Paul

Paul,
I see you have BD chipped ecu for sale. I thought I would post this here as others may benefit from it.

I have keenly been following your posts with regard to the EU2 and EU3 base maps and using a South African D2a EU3 base map. I am actually going back to SA for the month of December and was hoping to speak to a few companies there that do remapping.

WRT to your BD ecu, if I get this ecu set up for my vehicle and then for some reason want to go back to my std ecu, is it as easy as just swopping the ecu's, without the need for a Nanocom. So besides the ecu essentailly nothing on the vehicle changes.

Firstly the reason I ask is because I don't have a Nanocom, so I would be paying someone to set up the remapped ecu. (I am on the Gold Coast.)

And secondly I am in two minds whether I should just leave mine std (99 Td5). Somehow I am not feeling the improvements everyone else seems to be. I removed the centre silencer and can't say I felt any improvement.

I also removed the egr and it made the engine feel a lot rougher not just at the usual 2250rpm so I put the egr back in. There was a marginal performance improvement but then I was revving it higher than usual.
With the egr back its back to how it has always been.

I also have the go faster blue silicone turbo hoses :cool: and gave the wastegate actuator 1.5 turns which made a noticeable improvement.
Cleaning the intake manifold sensor also helped.

Thanks
Ryan

Quote:

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Originally Posted by CountP

is it as easy as just swopping the ecu's, without the need for a Nanocom

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Yes. Once you've read the injector codes and saved the file ... you can swap back at any time. Although ... I don't think you will.

Quote:

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Originally Posted by CountP

I don't have a Nanocom, so I would be paying someone to set up the remapped ecu.

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I'm sure another member on here can help you out ... after all, that's what this forum is about! All you've gotta do is ask.

Quote:

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Originally Posted by CountP

I also removed the egr and it made the engine feel a lot rougher not just at the usual 2250rpm so I put the egr back in. There was a marginal performance improvement but then I was revving it higher than usual.
With the egr back its back to how it has always been.

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Removing the EGR is about engine longevity ... not performance.

Cheers

Craig

Hi Ryan,

The ECU has been sold already.

The BD ECU was a MSB unit so would have been fine with any 99-01MY Td5 Auto Disco. Most of what this thread is about is converting from a MSB ECU to the later reflashable NNN ECU's.

Once an ECU is configured for the motor you can swap between stock and remapped ECUs without any dramas.

Mods like muffler and egr are pretty marginal at best. Rechipping or remapping is in a different league as it changes the way the engine is fuelled. A stage 1 chip or map will transform the way the vehicle drives.

cheers
Paul

Call Phil at TRS in Adelaide.
For $600 and a swap-over ... you can have a chipped MSB ECU. (Smooth delivery of torque too) and if you think you'll need it ... for another $400 you can keep your old one.
Just gotta find someone with Nanocom to help you out.
Do it!

A lot of this info is comparable to petrol ECU technology: obviously, the diesel pumps work differently, but a lot of the sensors are very similar and provide similar inputs for the same AF reasons.

Thanks for the thread.

Hi Paul (offtrack), thanks for the work you have put in on this subject, most appreciated. All I have to do now is go back to the start and collate the information you have provided into a reference for doing mine.

That brings me to a question I have for you. I have a 99 D2 TD5 Auto with SLS and ACE. My question is. will I have any issues with the ACE or SLS systems being incompatible with the NNN ecu that you know of?

I know they are separate systems but I do not know enough about how the different systems work together to make an informed assumption.

I would love to get a NNN into my vehicle to make it easier to try different maps to get the most out of my vehicle.

I have the EGR removed, BD remap (not sure what stage and they cannot tell me), silicone hoses, different exhaust manifold, allisport intercooler, vnt and boost box (Fabulous), different exhaust etc.

Regards.
Mike

Quote:

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Originally Posted by Mikey

Hi Paul (offtrack), thanks for the work you have put in on this subject, most appreciated. All I have to do now is go back to the start and collate the information you have provided into a reference for doing mine.

That brings me to a question I have for you. I have a 99 D2 TD5 Auto with SLS and ACE. My question is. will I have any issues with the ACE or SLS systems being incompatible with the NNN ecu that you know of?

I know they are separate systems but I do not know enough about how the different systems work together to make an informed assumption.

I would love to get a NNN into my vehicle to make it easier to try different maps to get the most out of my vehicle.

I have the EGR removed, BD remap (not sure what stage and they cannot tell me), silicone hoses, different exhaust manifold, allisport intercooler, vnt and boost box (Fabulous), different exhaust etc.

Regards.
Mike

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Hi,

SLS and BCU are differente command units, so you will be fine.
You just have to look for an NNN ecu ending in #30 - nnn500030 or nnn000130 - wich are for the auto.

Regards,

Quote:

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Originally Posted by Mikey

Hi Paul (offtrack), thanks for the work you have put in on this subject, most appreciated. All I have to do now is go back to the start and collate the information you have provided into a reference for doing mine.

That brings me to a question I have for you. I have a 99 D2 TD5 Auto with SLS and ACE. My question is. will I have any issues with the ACE or SLS systems being incompatible with the NNN ecu that you know of?

I know they are separate systems but I do not know enough about how the different systems work together to make an informed assumption.

I would love to get a NNN into my vehicle to make it easier to try different maps to get the most out of my vehicle.

I have the EGR removed, BD remap (not sure what stage and they cannot tell me), silicone hoses, different exhaust manifold, allisport intercooler, vnt and boost box (Fabulous), different exhaust etc.

Regards.
Mike

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I have neither of these functions but do know they are not controlled by the ECU. Not sure which but they are controlled by either the BCU or the SLABS units.

While it isn't an issue in terms of moving from MSB to NNN (D2a's have the same range of non-engine features as D2's after all!!) there is communication between most ECU's. It's not a matter of "control" but of passing information.

Both ACE and SLABS use data from the ECU:

C0658-19 (ECM Tacho output) -> C0647-19 (ACE Engine Speed input)
C0658-32 (ECM ABS output) -> C0504-10 (SLABS Engine data input: throttle position, torque, engine type, gearbox type)

cheers
Paul