Member Since: 12 Dec 2005
Location: The Gaff
Posts: 50934
I think that sums it up Mossy 21 year LR veteran > D2 GS 2003 > D3 S 2006 > D3 HSE 2009 > D4 HSE 2013 > D4 HSE 2015 > D5 HSE 2018 > DS HSE R-Dynamic P300e 2021
21st Nov 2006 5:58 pm
LT
Member Since: 31 Dec 2005
Location: South West
Posts: 23369
No offence meant DG, by "doubters" I was reffering to the members who have doubted the benefits & expressed concerns about potential problems if they modify/re-map their D3's. Not just in this post but in past posts as well.
We would of course all feel much happier if L/R fully warranted a re-map.
Personally I have no fears, as I'm aware that the re-map I have still leaves a wide margin of tolerances & the research has been done to establish that the increased bhp/torque will not overly stress the gearbox, clutch, drivetrain etc. I only do a small amount of relatively easy off-roading, use branded (not supermarket) diesel & change the oil every 7,500 miles.
Plus, I do not drive my D3 like a "nutter". I only use the extra power for safer overtaking & pulling out of junctions etc. mostly I drive the D3 as I would were it not re-mapped & as such enjoy a slight increase in mpg.
However imo it is vital to avoid "generic" add on power boxes etc. & only have a re-map from a tuner who has thoroughly researched the vehicle involved. I have been "moding" cars for years & I'm confident that the company I used to re-map my D3 are reputable as they were "O.K'd" by two tuning co.s that I have known & used for 12 & 5 years.
I think 4X4's with serious off-road capability, such as the D3, will always have a "conservative" ECU map as standard, as the manufacturer must expect them to be capable of continuous use in extreme conditions.
Last edited by LT on 21st Nov 2006 6:19 pm. Edited 1 time in total
21st Nov 2006 6:13 pm
DG Site Moderator
Member Since: 12 Dec 2005
Location: The Gaff
Posts: 50934
LT wrote:
No offence meant DG, by "doubters" .
None taken I didn't want peeps to think I was party to dissing TC \ JE thats all 21 year LR veteran > D2 GS 2003 > D3 S 2006 > D3 HSE 2009 > D4 HSE 2013 > D4 HSE 2015 > D5 HSE 2018 > DS HSE R-Dynamic P300e 2021
21st Nov 2006 6:16 pm
LT
Member Since: 31 Dec 2005
Location: South West
Posts: 23369
The press have often been critical of the performance of the TDV6 engined D3. I bet that in the future we will see more powerful versions of this engine (either 2.7 or 3.0) being offered. It's an easy modification to make to a "face lifted" version. IMO it would increase sales, I wouldn't have bought a TDV6 D3 unless I knew there was a "reputable" re-map available as both me & my wife found it potentially dangerously slow.
That could be because we are used to driving fast & mentally fast cars though
21st Nov 2006 6:28 pm
al cope
Member Since: 08 Nov 2005
Location: Oldbury, WM
Posts: 10297
Folks
A few of you are stateing that your D3 is horendously slow. As I already said, mine isnt chipped/remapped, so I thought I do a quick check on the way home.
From cruising (not accelerating through) at first 60, then 70 and then 80, in sixth (manual) mine takes 7 seconds to increase speed by 10mph. For 2.5 tons of diesel, with the aerodynamics of a shed, 7 seconds for 80-90mph doesnt seem bad to me.
I didnt get the opportunity to try a straight 60-90 dash.
Hows this compare to a remapped D3?
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21st Nov 2006 6:45 pm
LT
Member Since: 31 Dec 2005
Location: South West
Posts: 23369
I haven't done any timed runs etc. I (& the Mrs) just found that pulling away from junctions & passing slower vehicles in the standard (pre-enhancement) TDV6 was not to our likeing. Post re-map & ITG filter, we are happy. The ability to overtake safely when required is important to me as because I like my D3 so much I've decided to use it as my business car. If, as was originally intended, the D3 was used for family transport, holidays, ferrying dogs, rubbish carrying, towing etc. etc. I probably wouldn't be so bothered about the "standard" tune.
But yes the difference is very noticeable Iirc 50bhp & 50lb/ft of torque more. Exactly what imo the TDV6 should have had in the first place.
21st Nov 2006 6:57 pm
BarryG
Member Since: 30 Apr 2006
Location: Eire
Posts: 1333
al cope wrote:
Folks
A few of you are stateing that your D3 is horendously slow.
Just in my case to clarify a bit on al cope's post.
I never found the D3 "slow" or "under powered"
not to confuse this with where I see the problem
and that being . the time it tuck from when you put
your foot down untill enough rpm is being generated
to start the discovery moving.
This is the point ,this hesitation to get its ass moving is where
my issue was.
its down to the amount of rpm (or at least the time it takes to gernerte)
this rpm before the turbo wakes up and takes over.
21st Nov 2006 7:15 pm
simon
Member Since: 11 Jan 2005
Location: Shropshire
Posts: 18296
why a manual is better than a 'lazy let the box do it' auto
21st Nov 2006 7:17 pm
Robbie
Member Since: 05 Feb 2006
Location: ¯\_(ツ)_/¯
Posts: 17932
simon wrote:
why a manual is better than a 'lazy let the box do it' auto
Who's lazy? You should see what I am doing with the spare hand!
21st Nov 2006 8:07 pm
PSC
Member Since: 01 May 2006
Location: Johannesburg
Posts: 255
Robbie wrote:
Well you live and learn, as LR (UK Spec) list the D3 (EEC kerb) as 2504 for the TDV and 2536 for the petrol - +32 Kg counts as a little heavier.
The (owners) manual gives the Diesel as been heavier ( my source ).
Approximate EEC kerb weights (full fuel tank)
Metric (varying according to trim/Spec)
- Petrol engine vehicles 2 486 - 2 704 kg
- Diesel engine vehicles 2 494 - 2 718 kg
While I agree that heavier vehicles would typically require bigger brakes. The main object of the brakes is to reliably scrub of the kinetic energy
( e= m c*c ) velocity been key as it is squared.
As the V8 has better acceleration ( and I think a higher top speed ) the brakes would need to be larger as you *can* generate and dissipate a lot more energy within a fixed period of time.
This is not saying that one neccesceraly will, but the manufacturers need to have a certain margin for the vehicles capabilities.
-- Paul
21st Nov 2006 8:59 pm
DSL Keeper of the wheelie bin
Member Since: 11 May 2006
Location: Off again! :-)
Posts: 72788
PSC wrote:
While I agree that heavier vehicles would typically require bigger brakes. The main object of the brakes is to reliably scrub of the kinetic energy ( e= m c*c ) velocity been key as it is squared.
Only to Einstein. U mean KE =1/2 Mv(sq'ed)???
21st Nov 2006 9:19 pm
SN
Member Since: 03 Jan 2006
Location: Romiley
Posts: 13710
Accelaration effect - v = u + atSteve N | 21MY Defender | 08MY Discovery 3 (history) | 06MY Discovery 3 (ancient history)
21st Nov 2006 9:22 pm
DSL Keeper of the wheelie bin
Member Since: 11 May 2006
Location: Off again! :-)
Posts: 72788
Hey, I'm out of equations, I'm only a geochemist (sort of) after all!
21st Nov 2006 9:24 pm
PSC
Member Since: 01 May 2006
Location: Johannesburg
Posts: 255
DSL wrote:
Only to Einstein. U mean KE =1/2 Mv(sq'ed)???
Thats the one !
-- Paul
21st Nov 2006 9:43 pm
PSC
Member Since: 01 May 2006
Location: Johannesburg
Posts: 255
Regarding the increase in power of remaps, most of the time we are not running at full power so the increased stress of the power will only occur for a small percentage of the engines/drivetrains life (unless you tow continiously uphill or something similar ).
The other changes to the maps would possibly pertain to injection timing on part throttle (lean conditions) to achieve a higher efficiency (better mpg).
Perhaps someone could check if the part numbers on some of the drivetrain components (diff, CV's etc) are the same between the TDV8 and the TDV6 (on the RRS), that should put the drivetrain capabilities to rest ....
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