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Old 8th January 2013, 12:58   #11
bassman
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I filled up again today(still without a MAF), and managed to squeeze in 46.64 litres of diesel....I had done 502 miles on this ammount...which works out at 10.76 miles a litre or 48.9 mpg.....

Ive bought a MAF from Germany via the ebay link and even managed a $12 discount($177 inc postage)....With the $ now strengthening, its costing us more each day....

Hopefully it will be here in a week or so....
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Old 20th January 2013, 15:18   #12
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I fitted my new MAF on friday after cleaning the EGR and replacing the air filter.....I didnt notice any difference......but early days..

I filled up today and my mpg has dropped quite a lot since my last fill up...

Does the ECU know its wet, cold and snowing, or is it my driving thats changed to cope with this weather...

Today I filled up with 46.5 litres of diesel and had managed a paltry 442 miles on it.....giving a disappointing 43mpg....

I reset all my OBD on filling up, hopefully to see a great benefit in performance with my new MAF.

I'll not be happy unless it goes back to 50 to 54 mpg(brim to brim) that I was getting prior to MAF failure...
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Half of the people can be part right all of the time, Some of the people can be all right part of the time.
But all of the people can't be all right all of the time. .........I think Abraham Lincoln said that.
"I'll let you be in my dream if I can be in yours" I said that............................ Bob Dylan 1963
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Old 28th January 2013, 22:43   #13
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The weather got worse during the week, and so did my mpg, reading as low as 39mpg on the OBD......

On friday I filled up to the brim, and over the weekend did 417 miles, 340 of those were on M6/M62/A1/A66 roads using cruise control with the OBD fixed between 53.3 and 54.3 mpg.

I filled up on returning, and had used 35.11 litres giving a brim to brim mpg over those 417 miles of 53.9....which makes the OBD quite accurate.

Ive done another 100 mixed miles today and the OBD is still showing 53.3mpg, so hopefully the car is back to normal mpg after its MAF change...and I'll get 50 around town, and 55ish on a run.....

I can feel no real difference, with my new MAF, and running without one though!
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Half of the people can be part right all of the time, Some of the people can be all right part of the time.
But all of the people can't be all right all of the time. .........I think Abraham Lincoln said that.
"I'll let you be in my dream if I can be in yours" I said that............................ Bob Dylan 1963
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Old 29th January 2013, 00:52   #14
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Getting anything above 50MPG is incredible, even your dissapointing 44MPG at the moment i would be delighted with im only getting 40MPG.

Is there anyway i can test if my MAF is faulty.
Or how do i know if my MAF is faulty?
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Old 29th January 2013, 09:09   #15
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Quote:
Originally Posted by Kevmc75 View Post
Getting anything above 50MPG is incredible, even your dissapointing 44MPG at the moment i would be delighted with im only getting 40MPG.

Is there anyway i can test if my MAF is faulty.
Or how do i know if my MAF is faulty?
I've never met anybody who consistently gets more than 45 at the absolute outside. Under ideal conditions, I scrape about 43.

So I'd say you're doing OK!
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Old 29th January 2013, 19:48   #16
bassman
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Quote:
Originally Posted by Kevmc75 View Post
Getting anything above 50MPG is incredible, even your dissapointing 44MPG at the moment i would be delighted with im only getting 40MPG.

Is there anyway i can test if my MAF is faulty.
Or how do i know if my MAF is faulty?
If you remove the plug from the MAF and the car runs the same, then it is reckoned the MAF is faulty......

I'm a very economical driver and never feel the need for hard acceleration, so when I disconnected my MAF I didnt feel any difference, albeit had a slight loss in MPG.

I think the harder you drive, the more you may see the difference...

Mine was tested and shown to be faulty and over/under fuelling by MarinaBrian with his magic wand (aka..T4 test)

Quote:
Originally Posted by hogweed View Post
I've never met anybody who consistently gets more than 45 at the absolute outside. Under ideal conditions, I scrape about 43.

So I'd say you're doing OK!
I test mine every week using brim to brim method, as I say above, I am a very economical driver, I never need to rush any where, and usually got 50 to 54mpg before my MAF went bad....Its gradually building up to that again with the new MAF.....
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Half of the people can be part right all of the time, Some of the people can be all right part of the time.
But all of the people can't be all right all of the time. .........I think Abraham Lincoln said that.
"I'll let you be in my dream if I can be in yours" I said that............................ Bob Dylan 1963

Last edited by bassman; 29th January 2013 at 19:55.. Reason: added another post
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Old 29th January 2013, 23:11   #17
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I have really been driving economically in the past few months to improve MPG.
Firstly most of my driving is NOT motorway but suburb or dual carriageway.
I have not been able to get better than 40 MPG infact one time i did a motorway run i got 43MPG, and that was with roof rack on and something on roof for return journey.
I will be doing a nice long run again next week so time will see.
I always test brim to brim.
I know engine isnt running at the hottest temp possible, so im going to fit an upgraded inline stat... MOD.....
I will also do the MAF test..
I know when i had a faulty MAF on my old Citroen C5 i replaced it and found a huge improvment in MPG.
That time the MAF was totally corroded...
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Old 29th January 2013, 23:19   #18
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I know two other people with these motors, and we all get 40-43mpg average. I always drive really gently – my last two cars were M3’s, and after them, it seems kinda pointless to try and get the poor Rover to go fast.

My driving is mostly “A” roads, occasional motorway, occasional in town.

My thermostat failed a few months ago, but I didn’t see any reason to fit a modified one – I got the standard unit replaced, and that brought the car back up to normal running temp (88 I think).
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Old 1st February 2013, 00:03   #19
bassman
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I constantly watch my rev counter and my mpg on the OBD.....

I realised a while ago that instead of coasting in 3rd and 4th gears a lot of the time, I could have been in 5th gear....and looking at the rev counter certainly bears this out....often dropping 500rpm by going to a higher gear.

I also noticed that leaving my house in different directions also affects my mpg on the OBD.....One way there is a long steep bank, which puts the OBD down by about 5 mpg, but going out the other way is a lot more gradual and the display stays a lot higher.......Going straight down the A19 to my daughters, has a 10 to 15 mpg difference (increase on OBD), than going through urban, stop and start traffic.

My driving isn't totally governed by what I say above, but its amazing how you can increase your mpg.

Its all been short journeys in built up areas this week, and today my OBD is on 47mpg...I'll brim to brim it next fill up, to get an exact reading
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Half of the people can be part right all of the time, Some of the people can be all right part of the time.
But all of the people can't be all right all of the time. .........I think Abraham Lincoln said that.
"I'll let you be in my dream if I can be in yours" I said that............................ Bob Dylan 1963
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Old 10th February 2013, 22:47   #20
bassman
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Quote:
Originally Posted by bassman View Post
Its all been short journeys in built up areas this week, and today my OBD is on 47mpg...I'll brim to brim it next fill up, to get an exact reading
I brimmed it at the back end of last week, after a week of short journeys and filled up with 41 litres and had done 437 miles.....thats around 48.5mpg.....

Been up to Scotland for the weekend, roads fairly empty so managed uninterupted cruise control a lot of the way there and back......OBD after 300 miles showing 53mpg....
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Half of the people can be part right all of the time, Some of the people can be all right part of the time.
But all of the people can't be all right all of the time. .........I think Abraham Lincoln said that.
"I'll let you be in my dream if I can be in yours" I said that............................ Bob Dylan 1963
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