Thread: Diesel Tuning Chip for Land Rover Discovery 4

Originally Posted by phl

Then it should be fine to take the D4 SDV6 from 183kW to 215kW, as that's what LR does with the same engine in the RR Sports SDV6.

I gather some of that could also be due to our poorer fuel, as even the 183kW gets 188kW in EU guise (as stated by the engine sticker).

Gearboxes don't give a damn about peak power. It is torque that matters. Which is why ZF publish torque ratings.

Originally Posted by Dougal

If the D4 can be remapped, then the EGR can be shut-down. If the tuner can't do that, then you might need to find another tuner.

They have all tried and so far the D4, well actually FROM the 2007 D3 on the EGR can't be done, and from MY2011 D4 on, the re-map has to be done on the bench and there is no guarentee it will work, some do, some don't and the ones that do work, the gain is not that much.

So, not ALL Bosch EDC diesels are the same.

Baz.

Originally Posted by Redback

They have all tried and so far the D4, well actually FROM the 2007 D3 on the EGR can't be done, and from MY2011 D4 on, the re-map has to be done on the bench and there is no guarentee it will work, some do, some don't and the ones that do work, the gain is not that much.

Bollocks the EGR can't be shut down.

Remapping on the bench is about bypassing the write protection. This was the same for all BOSCH EDC17 ECU's regardless of which brand of vehicle they are fitted to. But several tuners can now directly flash EDC17.
EDC17 is EDC17, the coding is the same whether it is fitted to a vw, audi, landrover or bmw.

Shutting down EGR through the map is modifying 3 bytes in the code. If your tuner can't do this, then try another tuner.
The tuners who don't know about these bytes (I have they for one of my cars, but no others) try to shut down EGR by flattening tables in the maps.
This doesn't work.
It doesn't work because they are doing it wrong.

Don't confuse mapping out EGR with blanking EGR either. Blanking the EGR just trips error codes on all modern diesels.
Mapping it out shuts the valve and leaves it there while correcting all the expected airflows back to the no-egr values. No error codes and no problems.

Originally Posted by Redback

So, not ALL Bosch EDC diesels are the same.

Baz.

All EDC16's are the same, all EDC17's are the same. Etc.

Originally Posted by Dougal

Bollocks the EGR can't be shut down.

Remapping on the bench is about bypassing the write protection. This was the same for all BOSCH EDC17 ECU's regardless of which brand of vehicle they are fitted to. But several tuners can now directly flash EDC17.
EDC17 is EDC17, the coding is the same whether it is fitted to a vw, audi, landrover or bmw.

Shutting down EGR through the map is modifying 3 bytes in the code. If your tuner can't do this, then try another tuner.
The tuners who don't know about these bytes (I have they for one of my cars, but no others) try to shut down EGR by flattening tables in the maps.
This doesn't work.
It doesn't work because they are doing it wrong.

Don't confuse mapping out EGR with blanking EGR either. Blanking the EGR just trips error codes on all modern diesels.
Mapping it out shuts the valve and leaves it there while correcting all the expected airflows back to the no-egr values. No error codes and no problems.



All EDC16's are the same, all EDC17's are the same. Etc.

Well if that's the case, Bruce Davis at Perfromance Landy's or Peter Bell at B.A.S in the UK will welcome your input, give them a call.

Originally Posted by Redback

Well if that's the case, Bruce Davis at Perfromance Landy's or Peter Bell at B.A.S in the UK will welcome your input, give them a call.

Why not tell them yourself? You clearly know everything on this topic.

Wtf?

Originally Posted by Dougal

Why not tell them yourself? You clearly know everything on this topic.

For someone who does not think you should remap you know all about maps and the D4.

I agree with redback because:


You (dougal) clearly know everything on this topic. And obviously more than Pete Bell and other tuners.

Originally Posted by CaverD3

Wtf?



For someone who does not think you should not remap you know all about maps and the D4.

I agree with redback because:


You (dougal) clearly know everything on this topic. And obviously more than Pete Bell and other tuners.

Yes the average person shouldn't run a performance remap. Especially in a D4 (or any vehicle) used in a hot climate for towing.

I've never met Pete Bell. I make no claims as to what he can or cannot do. Nice that you agree with Redback.

If you want your 720Nm remap. Go ahead and get one. Stop moaning on the internet because someone disagrees with you.

Originally Posted by Dougal

Why not tell them yourself? You clearly know everything on this topic.

Because them and other members here have said it couldn't be done, you seem to think it can, so you would be better off calling them.

I'd love to do the EGR like I had on my D2, but everyone said it can't be done on the D4.

Baz.