My car has 4 maps on it. I can choose from Eco/Normal/Sport or User defined. There is a noticeable difference between Eco and Sport.
I have a feeling that some remaps advance injection timing, which would improve economy but also increase emissions I think. Just a guess though.
Eh?
On a purely financial basis..... miles per gallon of diesel vs miles per gallon of petrol ...... diesel comes out on top.
€$£/mile then Luxembourg is your best bet. Cheapest fuel in Europe. Well worth the detour.
My daily drive is a LWB T5.
#word
CountZero - Member
Wasn't the VW thing to con [s]people Americans[/s] Californians into thinking the car was greener than it really was?
Fixed that for you, California and I think LA were the only regions where VW fudged emissions test figures and mapping. It certainly never effected any European regions
€$£/mile then Luxembourg is your best bet. Cheapest fuel in Europe.[b] Well worth the detour[/b]
Not on my commute from Leeds to Sheffield it isn't.
So better fuel economy, yet with increased emissions; surely if you're burning significantly less fuel, combustion is more efficient?
Not really the case, before remap my VW caddy used to return 64mpg+, after remap it returns 56mpg+ despite driving it the same as before but the remapped engine is nicer to drive as I've oodles of low down torque so I can leave it in 5th rather than drop a gear and I merely tap the cruise control a few times to shoot past anything impeding my [i]progress[/i] then back down to my usual cruising speed. If I want to make genuine progress (or just go out for a shits n' giggles drive) I use my 1984 mk2 golf with a 1960cc ABT developed 16v engine/short ratio gearbox/quaife diff/bilstein b16 shocks/eibach springs/anti roll bars/powerflex polybushed shoving out 194bhp and custom mapped Ecu controlling ignition and fueling running additive high octane fuel that despite all attempts at semi-sensible mapping still pisses petrol up the wall like no ones business at 16mpg but by **** it's good fun to rag the tits off it for an afternoons jolly through the Galloway hills.
Or I may just ask a mate to take me for a run in his remapped stage 2 850nm+ RS6 with Armytrix titanium exhausts but as I haven't been allowed to drive that yet as it's a moot point, but I'm working on it...... I'm not holding my breath as I had a very squirrly moment 3 yrs ago in his B7 RS4 round the Nurburgring in the wet through the kellenhard section, I honestly thought we were going to end up as another statistic of the ring. Very - very sobering moment and I've not been back since so I dunno how I feel about our trip later this year, I doubt I'll be driving but I'll happily be a passenger beside him
Hopefully discusions like these will soon be consigned to the dark web and petrolheads can play with peodophiles.
Same mentality.
Hopefully discusions like these will soon be consigned to the dark web and petrolheads can play with peodophiles.Same mentality.
Indeed, having sex with children and liking cars are virtually indistinguishable.
Often I find myself on the phone to the police to report a sex offence before realising that it's actually just a bloke in a car.
Indeed, having sex with children and liking cars are virtually indistinguishable.
Youre right, car people do way more harm.
Internet nobs with a crackpot green agenda are far worse.
Easy wilburt...that's not a sensible analogy.
My remapped Hayabusa was doing 12mpg when flat out on the dyno, it was a joy to ride though. Thinking of getting my MT-07 flashed, hope to remove that on/off fuelling when going from fully closed throttle to part throttle. I do like it's 65mpg economy though!
How did the tuners get the Honda 2.2 i-CDTI from 147BHP to 221BHP - they ate clutches, but went like the clappers.
Mine was remapped to 190 and it hammered the clutch within 3 months,
Easy wilburt...that's not a sensible analogy.
Disagree.. Petrolheads cause more harm than Peodophiles.
Thats a measurable fact.
So better fuel economy, yet with increased emissions; surely if you're burning significantly less fuel, combustion is more efficient?
In a diesel, the higher the combustion temperature the more efficient it is - because you're generating more heat which is what makes the cylinder expand. However there is always extra air in the cylinder, and as air is made of nitrogen and oxygen when you get it really hot the nitrogen reacts with the oxygen to produce a range of nitrous oxides known as NOx. Some values of x are nasty gasses that are responsible for poor air quality in cities.
The traditional solution to that is to keep the combustion temperature lower and also replace some of the air with exhaust gas - but that reduces efficiency. The latest engines though don't do this, instead they have another catalyst in the exhaust that reduces the NOx into the less harmful forms. Which is what you need adblue for or similar stuff - that's part of the reduction reaction. So these engines should be more efficient.
Internet nobs with a crackpot green agenda are far worse.
What's wrong with having a green agenda?
Bloke who bought my Ibiza thought it was a good idea to get it remapped.....
130bhp up to around 180bhp with 274,000 miles on the clock & still on it's original clutch when I sold him it. 😆
He sent me a text a couple of weeks later telling me it had started slipping in 4th, 5th and 6th....
'My' Poor Car.....!
What's wrong with having a green agenda?
Nothing whatsoever
Well, you could of course argue that the oil families who run the world and use their wealth and influence to entrap prominent paedophiles to do their bidding show that both petrol and paedophiles are intrinsically linked.
I mean, look at Royal Dutch Shell; after all, it was George Bush's Granddad who laundered the proceeds of WW2 via the Dutch Monarchy... then there's the whole Dutroux thing... I could go on.
That said, when I've tuned my diesel cars (albeit with mechanical fuel pumps), they generally tend to be both faster and more economic... the economy bit is of course one in the eye for our overlords, who just want to sell us as much shit as possible, so they can squabble over who has most continents and plundered bling.
Well, you could of course argue that the oil families who run the world and use their wealth and influence to entrap prominent paedophiles to do their bidding show that both petrol and paedophiles are intrinsically linked.
You could, but you'd be making a fool out of yourself by drawing rubbish conclusions. It could be for example that simply being rich is the correlation, not specifically being rich from oil. However there seem to be plenty of poor paedophiles too so I doubt there's any correlation at all.
However there is always extra air in the cylinder, and as air is made of nitrogen and oxygen when you get it really hot the nitrogen reacts with the oxygen to produce a range of nitrous oxides known as NOx.
Damn, wouldn't you know it, a sensible response just as I decide to enter the troll's lair...
I'm not trolling here, but could that mean that some of the increased efficiency comes from the NOx being of the same form that is used in dragsters (and dentists)
[i]Petrolheads cause more harm than Peodophiles[/i]
I suspect [i]per individual[/i] owning/driving a car petrolheads (although not sure what the definition of this is) cause less damage than paedophiles?
If we're going to start measuring impact we might as well be scientific about it.
Having said that, it's a daft analogy - it fails on so many counts it's not worth making.
Hopefully discusions like these will soon be consigned to the dark web and petrolheads can play with peodophiles.Same mentality.
This is either, a spectacularly misjudged troll, or
(if serious) the current front runner and eventual winner of "STW Bellend of the Decade"
Cars and trucks kill many hundreds of people directly every year and tens of thousands indirectly as well as maiming tens of thousands
If you want to make fatuous comparisons thats a lot more than many other things
I'm not trolling here, but could that mean that some of the increased efficiency comes from the NOx being of the same form that is used in dragsters (and dentists)
Nope. NOx in dragsters is added to get more oxygen into the engine. In diesels, it's a byproduct of the combustion and doesn't do anything good in the engine.
The increased efficiency of diesels is because the incoming air is compressed much more which means the expansion ratio is greater - the difference between full compressed and fully expanded in the cylinder - which makes it more efficient according to physics.
If you could compress petrol that much then it would be nearly as efficient, but you can't because of the way the Otto cycle works comapred to the Diesel cycle.
Maybe it's the revenge of the dinosaurs, because we're burning their squashed up remains.
doesn't do anything good in the engine
Faster, torquier and more economic seems like it's not tooooo bad.
Oil isn't dinosaurs.
Faster, torquier and more economic seems like it's not tooooo bad.
It's not the NOx that is doing that to the engine. Setting up an engine to be more efficient creates more NOx as a byproduct.
Is there a way of extracting it and selling it to dragsters (and dentists)?
[i]Is there a way of extracting it and selling it to dragsters (and dentists)? [/i]
they pipe it into the ventilation system so you giggle when you put your foot down.
Is there a way of extracting it and selling it to dragsters (and dentists)?
No.
The stuff dragsters and desntists use is N2O
Cars produce mostly NO and NO2
I'd like to know more about these diesel cycles. Can I get one on the cycle to work scheme?
Well Im convinced of one thing for sure.
Jivehoneyjives troll credentials are huge and go beyond that of just paranoid conspirousy nutt
well that thread went in a few directions , informative and entertaining .
and also reading the Ebike thread
looks like I will be burning in hell
diesel van , Remapped = petrolhead - and other crimes
Ebike but not yet a pensioner or disabled
very baaaaad man Oops sorry person
Can I ask one genuine thing - is this still wrong in some people's eyes - my old t5 was the 130 bhp version, VW made it with the same 2.5 engine in other versions inc. a 170 bhp. I found when carrying a lot for work it struggled a bit up hills so yes I had it remapped to make same output as 170bhp version, for a bit more low down torque and poke when needed. I wasn't tempted to go for the 200bhp+ some people had done, wanted to stay within limits of what VW already used then. I used posh V power diesel too which is supposed to clean your engine etc. The van drove well, nice and smooth with enough grunt for all situations now, I don't drive like a granny nor a boy racer, just boringly average. I guess maybe still a bad person to have done some might say but it did what I wanted without being OTT.
There's a "special" forum on Pistonheads for people like you.. 🙂
Rightio here is an update now I have done another tank of fuel .
Tank before remap 33.89 mpg
tank after remap 33.56 mpg
I have tried to drive as normal for most of this tank but have had a few mad moments to enjoy the power .
and also had the air con on a bit these last 3 days so happy with the fuel usage and very happy with the drive-ability .
Am gobsmacked how it pulls in the higher gears should have had it done years ago
Thanks for update ! I have had mates who have remapped Golfs and Galaxy. Always been positive. Thinking about a bike vehicle and have started considering Diesels with a remap 🙂
Did you think about Clutch / Dual Mass Flywheel considerations ? ie more power could over stress them ?
Are you remappers happy with taking responsibility for the excess deaths caused by NOX and soot from your remapped diesels. If you know ther is a problem try not to be a part of it - and don't deliberately make yourself one of the biggest contributors to the problem.
[url= https://www.theguardian.com/environment/2017/may/15/diesel-emissions-test-scandal-causes-38000-early-deaths-year-study ]Guardain report on excess deaths[/url]
[url= https://www.theguardian.com/environment/2015/jul/15/nearly-9500-people-die-each-year-in-london-because-of-air-pollution-study ]NOX deaths in London[/url]
This thread just went full-STW
Did you think about Clutch / Dual Mass Flywheel considerations ? ie more power could over stress them ?
Just use the old "powerful 4wd driveshaft saver trick"
Don't hoof it in first, Jamba
I remember the look of surprise a 600 Bandit rider looking for sport with a range rover had on his face as he dusted me from the lights on the inside... But once my turbo spooled up in second 😈
He'd disappeared?
Nope. NOx in dragsters is added to get more oxygen into the engine. In diesels, it's a byproduct of the combustion and doesn't do anything good in the engine.
Nitrous Oxide =/= Nitrogen Oxides, do not conflate the two. One is a specific compound (N2O) and the other is a catch-all term to describe the NO, NO2 and N2O compounds.
Furthermore N2O is commonly known as NOS not NOx.
(I realise you clarified that later but still wasn't particularly clear)
Internet nobs with a crackpot green agenda are far worse.
Harmless compared to the life changing consequences of a 'car tosspot'* overestimating their ability and selfishly treating the queens highway as their own playground.
* usually called 'Scooby-John', RS-Kev or GTI-Gazzer. For motorbike cocks it's Dave the blade or Gixer John. Whatever it is they are all complete tosspots.
yes I did think about the clutch and running gear
and as I have had the van since new I figured the clutch will neen replacing soon any ways .
how long do clutches last as this one is 148000 miles old .
so no change in fuel consumption or a small reduction when I fall back to driving normally
one vehicle in the last 12.5 years and averaging 12000 miles a year I reckon there are far more bad poluters than me on STW mr Edukator
