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RAI - MPG LOSS
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Wex
 


Member Since: 16 Apr 2007
Location: Knackeragua
Posts: 5173

Ireland 2006 Discovery 3 TDV6 S Manual Bonatti GreyDiscovery 3

tanters wrote:
No bother Si, I place little emphasis on it either Wink
Question  
Post #4143753rd Feb 2009 6:39 pm
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tanters
 


Member Since: 24 Oct 2007
Location: Oireland
Posts: 4284

Ireland 2005 Discovery 3 TDV6 Base 5 Seat Manual Tonga GreenDiscovery 3

Yes, I've now taken to not reading my own replies either Rolling Eyes



I'm going home now, this work is hard going Whistle

Thanks lads, we'll wait to hear from Nick tomorrow.
 A happy childhood ... is the worst possible preparation for life.  
Post #4143773rd Feb 2009 6:41 pm
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DSL
Keeper of the wheelie bin 


Member Since: 11 May 2006
Location: Off again! :-)
Posts: 72797

Ukraine 

To ever so briefly get back on topic, didn't notice any drop in mpg after my RAI was fitted, one of the LRE guys at Snowdonia thought I'd loose 1mpg for the RAI & 2mpg for the MTRs
   
Post #4143783rd Feb 2009 6:43 pm
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marcon
 


Member Since: 01 Mar 2006
Location: wex's Shed
Posts: 457

Ireland 2006 Discovery 3 TDV6 HSE Auto Zambezi SilverDiscovery 3

Got D3 29mpg

Fitted RAI 26 mpg

Fitted LR Rack 24mpg

Fitted MTR's 22 mpg

and so and so on Laughing

Tanters just cut the damn holes in it Rolling with laughter
  
Post #4145613rd Feb 2009 10:46 pm
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Wex
 


Member Since: 16 Apr 2007
Location: Knackeragua
Posts: 5173

Ireland 2006 Discovery 3 TDV6 S Manual Bonatti GreyDiscovery 3

there endeth the lesson Very Happy

Shall I rev up the Consaw Stevie boy ? Twisted Evil
  
Post #4145653rd Feb 2009 10:52 pm
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christyler
 


Member Since: 31 Dec 2005
Location: Cork, Ireland
Posts: 1168

Ireland 2006 Discovery 3 TDV6 S Auto Zambezi SilverDiscovery 3

take the top off, see does the MPG improve if it does, then cut the slots Thumbs Up
 CLUB "Ah Shor it'll be grand"


First D3 in the World with a Hydraulic Winch.
2006 Disco 3 TDV6 S Auto,
Diff Locks, Turbochipped, Raised Air Intake, 220volts Onboard, Onboard Compressor, Large Bore Exahust, Underbody Protection, One or two Other Mods as well.
Other toys include, Argo Avenger 8x8, Tatra 6x6 Motorhome (Being Built) 
 
Post #4145853rd Feb 2009 11:11 pm
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tanters
 


Member Since: 24 Oct 2007
Location: Oireland
Posts: 4284

Ireland 2005 Discovery 3 TDV6 Base 5 Seat Manual Tonga GreenDiscovery 3

marcon wrote:
Got D3 29mpg

Fitted RAI 26 mpg

Fitted LR Rack 24mpg

Fitted MTR's 22 mpg

and so and so on Laughing

Tanters just cut the damn holes in it Rolling with laughter




Nothing to do with the 10ton of tools in the back then Murt no Rolling Eyes Laughing


D, put the dremel on charge Thumbs Up
 A happy childhood ... is the worst possible preparation for life.  
Post #4145943rd Feb 2009 11:20 pm
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marcon
 


Member Since: 01 Mar 2006
Location: wex's Shed
Posts: 457

Ireland 2006 Discovery 3 TDV6 HSE Auto Zambezi SilverDiscovery 3

Did the so on and so on bit not cover the tools. Laughing
  
Post #4145953rd Feb 2009 11:22 pm
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Popelka
 


Member Since: 31 May 2008
Location: Praha (Prague)
Posts: 2430

Czech Republic 

christyler wrote:
take the top off, see does the MPG improve if it does, then cut the slots Thumbs Up

would taking the top off cause lower air pressure (venturi effect ) as you drive faster and thus cause poor MPG.
I've seen pics of other RAI that have a forward facing inlet which at first I thought would just help force in cr@p (dust, rain, snow etc) but the quote of taking the top off has now got me thinking of the problems associated with these issues. Question
  
Post #4147234th Feb 2009 7:50 am
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The Large One
 


Member Since: 20 Apr 2007
Location: Down the polytunnel
Posts: 6143

England 2009 Discovery 3 TDV6 XS Auto Stornoway GreyDiscovery 3

Just had a reply back from LR
It's a design chabge from the manufacturer
No reason given other than that
Early ones had slots, current and futeure no slots...
The guy did say..."Why not sell him a file"

Anybody else got no slots and find decrease in fuel economy ? if so give me details and i will pass it back but as i'm not the only LR dealer selling these and no one else has asked the question it may be unrelated
 TLO has left the building.......
I no longer work for a Landrover Dealer


My little chilli sauce business http://www.thechillees.co.uk
if you would like to order anything just give me a shout 
 
Post #4154925th Feb 2009 10:27 am
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ronp
 


Member Since: 29 Nov 2006
Location: North Yorkshire
Posts: 15214

United Kingdom 2014 Discovery 4 3.0 SDV6 HSE Auto Corris GreyDiscovery 4

The Large One wrote:
Anybody else got no slots and find decrease in fuel economy ? if so give me details and i will pass it back



But, unless reading this thread, I rekon anyone fitting an RAI and has reduced mpg will no doubt just put it down to aerodynamics.
Certainly didn't recall a reduction on mpg when I had my [slotted] RAI fitted.
 I was a normal heterosexual chap, but in these new woke awakenings I now identify as a Wardrobe.  
Post #4155025th Feb 2009 10:48 am
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Bodsy
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Member Since: 06 Nov 2006
Location: In the Clubhouse
Posts: 21361

United Kingdom 2007 Discovery 3 TDV6 HSE Auto Java BlackDiscovery 3

I've not particularly noticed a decrease after my RAI was fitted....
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Post #4155125th Feb 2009 10:59 am
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blue meanie
D3 Decade 


Member Since: 04 Aug 2005
Location: Newbury
Posts: 6861

United Kingdom 2006 Discovery 3 TDV6 SE Manual Cairns BlueDiscovery 3

me neither...

it was already pants Laughing
 and theeeeennn......???  
Post #4155145th Feb 2009 11:00 am
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tanters
 


Member Since: 24 Oct 2007
Location: Oireland
Posts: 4284

Ireland 2005 Discovery 3 TDV6 Base 5 Seat Manual Tonga GreenDiscovery 3

Cheers Nick Thumbs Up


No doubt putting slots cost too much or something like that Rolling Eyes


I'll borrow the chainsaw off DW and see if there is any improvement.


Interesting all the same tho Whistle
 A happy childhood ... is the worst possible preparation for life.  
Post #4155265th Feb 2009 11:17 am
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Roel
 


Member Since: 16 Aug 2008
Location: home
Posts: 1215

Netherlands 2005 Discovery 3 4.4 V8 HSE Auto Tangiers OrangeDiscovery 3

So you think my not so good mpg doesn't have anything to do with my speed or the fact that my G4 has a V8?

It's just because I have a RAI, roofrack, G4 plaque, winch, light protectors, underbody protection and offcourse the G4 stickers that my mpg is a liitle lower than yours with a TDV6?
 Roel

1997 Camel Trophy Disco ex-P101JWK (traded it for a Britains 42101)
1984 90 TD5
2005 G4 Disco 3 BN55WPT

Also member of club MTR
and Club Faultmate

Interested in my 4x4 history see my website: www.mudmachine.webklik.nl
Sorry it's in Dutch and with google translator it gets funny. 
 
Post #4156445th Feb 2009 2:01 pm
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