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Home > General & Technical (L663) > D250 remapping, where and was it flawless?

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mse

Member Since: 06 Apr 2008
Location: UK
Posts: 5078

2016 Defender 110 Puma 2.2 XS CSW Scotia Grey

haymeister wrote:
mse wrote:
Ill start by saying Ive never been into remapping cars,,

That negativity aside...from what i can see there are some different hardware configurations for factory looking through parts etc, theres things that arent applicable when you select the different engine power.

One thing that would worry me, the D300's were pulled due to higher than normal failures, so along side hardware i would be worried the d300 increases the chance of a failure.

Source for D300 having higher than normal failures?

They only sold the D300 here in Japan, then from last year with MY25 the D350. Have not heard about engine failures here.

the fact they discontinued them because of higher than normal failures

Mike

5th Mar 2025 10:00am

haymeister

Member Since: 24 May 2021
Location: Saitama
Posts: 275

I don't buy that.

They did it because they get better margins since it's mainly software.

D300 already has the beefier brakes, additional aux radiator, and perhaps other parts tuned for the higher load. 22MY Defender 110 D300 S in Pangea Green and Contrast White Roof
IG defender_japan "Hulk san"

5th Mar 2025 10:27am

mse

Member Since: 06 Apr 2008
Location: UK
Posts: 5078

it was increase failures - sorry

Its not always a simple matter of a radiator makes that configuration work etc. Mike

5th Mar 2025 12:22pm

ruben

Member Since: 04 Feb 2021
Location: ASTURIAS
Posts: 271

Well, I don't think anyone will ever sell you five pounds for a pound!! Defender 110 SE I6 D250 23MY
ExDiscovery 3 TDV6 SE

5th Mar 2025 12:49pm

lrFFM

Member Since: 28 Sep 2017
Location: Frankfurt
Posts: 66

2016 Defender 90 Puma 2.2 SW Keswick Green

mse wrote:

the fact they discontinued them because of higher than normal failures

Never read such nonsense. The D300 was not discontinued. It is still available in many markets.

5th Mar 2025 1:17pm

lightning

Member Since: 23 Apr 2009
Location: High Peak, Derbyshire
Posts: 2980

l think the rumour stems from this thread about the D300.

https://www.defender2.net/forum/topic91314...e+failures

5th Mar 2025 2:03pm

mse

Member Since: 06 Apr 2008
Location: UK
Posts: 5078

lrFFM wrote:
mse wrote:

the fact they discontinued them because of higher than normal failures

Never read such nonsense. The D300 was not discontinued. It is still available in many markets.

D300 in some variants is but discontinued in the UK for the failure rate Mike

5th Mar 2025 2:31pm

johnlad

Member Since: 18 Dec 2023
Location: Blackpool
Posts: 63

Don’t know where your getting the information regarding the D300 being discontinued as Hendy group have just offered me a 25 plate Defender 110 X-Dynamic SE
D300

Last edited by johnlad on 5th Mar 2025 8:57pm. Edited 1 time in total

5th Mar 2025 7:39pm

lightning

Member Since: 23 Apr 2009
Location: High Peak, Derbyshire
Posts: 2980

lt may have been discontinued temporarily while they charged people extra for the D350 which costs no more to make.

I ordered a D200 but then it was "discontinued" and l had to have the D250 at £3,000 more. But a few months after l took delivery, the D200 was once again available to order.

5th Mar 2025 8:51pm

L3785

Member Since: 08 Oct 2024
Location: Yorkshire
Posts: 34

johnlad wrote:
Don’t know where your getting the information regarding the D300 being discontinued as Hendy group have just offered me a 25 plate Defender 110 X-Dynamic SE
D300

The D300 isn’t available in the UK currently - you’ll want to check the build year of that model as there are still MY24 vehicles for sale as brand new (when the D300 was available). You’ll probably find that this vehicle is a MY24 year that hadn’t yet been registered - check the central console in the interior and that’ll be the biggest giveaway. 2025MY Defender 90 D250 X-Dynamic HSE | Santorini Black with Black Pack

5th Mar 2025 9:30pm

mse

Member Since: 06 Apr 2008
Location: UK
Posts: 5078

lightning wrote:
lt may have been discontinued temporarily while they charged people extra for the D350 which costs no more to make.

I ordered a D200 but then it was "discontinued" and l had to have the D250 at £3,000 more. But a few months after l took delivery, the D200 was once again available to order.

D300 and d350 isnt any difference in price.

But there are differences so its missleading to say its just a different engine map.

That said - basically what all electric vehicles do and all manufactures have done.

Plus theres a warranty cover thats priceless! Mike

6th Mar 2025 9:44am

BadgerWaz

Member Since: 15 Jul 2024
Location: Linconshire
Posts: 104

TTW in nottingham use the pathfinder interface and oem software for the remap. LR were too greedy to offer the hardtop with the same power as the car, though the engines are the same.

When manufacturers have recalls due to poor mapping it's often due to overheating issues/carbonisation from lean fuelling. This gets revised with later recalls.

The D300 still sells. The larger brake calipers/discs on the D300 are un-neccessary on a van, and would take me half a day to change all four if I felt inclined.

To upgrade the D250 to D300 requires no physical changes to the engine at all. For example:

fuel pump, turbo, wastegate, intercooler, fuel rails, injectors, fuel pressure sensors, lambda sensors, induction air etc. etc. are not needed. The stock ones are adequate.

The software is loaded via the OBD port and removal of the ecu isn't required. From my experience this shows the upgrade is straightforward and I'm confident it is actually LR files uploaded. TTW have confirmed this is the case also.

The defender isn't a race car, it's a tractor designed to pull. Adding 50hp to a modern six-cylinder diesel won't melt it. The benefit for me with more torque is the ability to get a quicker shift-on when the trailer is on the back when driving through the wolds fully-laden. Also being LR software any warranty work couldn't be refused. Consumables like brakes aren't covered anyway and are cheap enough to replace, but if you tried to race a defender on the open road and slam-on at the very last minute you're clearly driving like a plonker and are in the wrong car to start off with.

If my engine fails, you can say 'you told me so.'
But it won't.

Thanks for the input everyone. Power is always a talking point regardless of the marque.

8th Mar 2025 1:27pm

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