|
||
|
23rd May 2010, 22:04 | #1 |
Regular poster
1999 rover 75 CDTi Join Date: May 2010
Location: rhondda
Posts: 41
Thanks: 0
Thanked 0 Times in 0 Posts
|
increasing MPG on a CDTi
guru's
what mods/changes can be done to increase MPG on a CDT? obviously controlled driving is a must but what else? ie air intake mod - does it help? ta fergy
__________________
1999 75 Conny CDTi |
23rd May 2010, 22:08 | #2 |
*
Rover 75 FaceLift Tourer CDTi 170BHP Auto ConnSE 2005 Model Starlight Silver Join Date: Nov 2006
Location: Abergele
Posts: 28,735
Thanks: 0
Thanked 6 Times in 5 Posts
|
May I ask if you have a Manual or Autobox?
|
23rd May 2010, 22:13 | #3 |
I really should get out more.......
75 tourer cdti, MG ZS 180, nissan terrano & 1.8t rover 25 Join Date: Feb 2010
Location: Pontefract
Posts: 2,645
Thanks: 17
Thanked 295 Times in 218 Posts
|
a good question would be what are you getting now? no point speaking hypothetically when we dont know where to start
|
23rd May 2010, 22:19 | #4 |
Regular poster
1999 rover 75 CDTi Join Date: May 2010
Location: rhondda
Posts: 41
Thanks: 0
Thanked 0 Times in 0 Posts
|
its a manual matey
i havent actually brimmed the tank yet but my MPG comes across as good to me i dont have a problem im literaly trying to find out what helps and what hurts. All these modifications are posted all over the forums but nought really on how much they will affect the MPG and as im penny pinching at the moment every little helps
__________________
1999 75 Conny CDTi |
24th May 2010, 11:34 | #5 |
Gets stuck in
Rover 75 CDTi Connoisseur SE Join Date: Jan 2010
Location: Gloucester
Posts: 582
Thanks: 203
Thanked 70 Times in 55 Posts
|
People say getting a knackered thermostat fixed should add a few mpg. As a related question, will a faulty theromosat still reduce mpg in the heat of summer?
|
24th May 2010, 11:50 | #6 |
This is my second home
Rover75 and Mreg Corsa. Join Date: Nov 2006
Location: Sumweer onat mote o'dust (Sagin)
Posts: 21,753
Thanks: 341
Thanked 3,660 Times in 2,924 Posts
|
Check the running temperature using Diagnostic mode test 7. You really need it to run at 90-100C. Most diesels run at 88-90C with a good stat. If you find it's less than 80C, that's one reason for poor mpg. Replacing a defective thermostat is a very effective way of gaining 5mpg or so.
TC |
24th May 2010, 11:57 | #7 |
Avid contributor
MG ZT CDTi+ Join Date: Nov 2009
Location: Donegal
Posts: 206
Thanks: 0
Thanked 0 Times in 0 Posts
|
basic things help like a light right foot,keep windows/sunroof shut at all times,no roof boxes either,keep air-con off,make sure tyres are correctly inflated,doing the air intake mod and running a ron box on the correct setting should also increase mpg as torque will be improved doing away with the need to keep changing up and down gears,a de-cat will also help as it stops back pressure in the exhaust system,if you can get a hold of yesterdays sunday times there is a very interesting article on improving mpg in the "in gear" motoring section
|
24th May 2010, 15:29 | #8 |
Passed Away
2002 Pale Blue. Rover 75 CDTi Connoisseur auto. 170K miles Join Date: Dec 2008
Location: Near the M67.
Posts: 14,509
Thanks: 199
Thanked 585 Times in 397 Posts
|
By the time you have done all the "mods" you may/may not gain a few mpg. But it will take many many many miles to get your outlay back.
... |
24th May 2010, 15:32 | #9 |
Banned
MGZT V8 & ZTT 190+LPG Join Date: Nov 2006
Posts: 8,089
Thanks: 0
Thanked 0 Times in 0 Posts
|
|
24th May 2010, 15:35 | #10 | |
This is my second home
15 years of 75s & ZTs now an XTrail Join Date: Nov 2006
Location: Danbury, Essex
Posts: 3,761
Thanks: 18
Thanked 88 Times in 56 Posts
|
Quote:
The weight you will lose by sweating will give you at least 2 mpg
__________________
ZT 190 X Power Grey The Only Colour is this Dark Silver!! When I was a kid I was scared of earwigs because I thought they actually lived in your ears. I was even more terrified of cockroaches! |
|
|
|