Casati wrote: » Has anybody on here done a rolling road test before and after? I guess that would be v useful in proving a point?
Toyotafanboi wrote: » I've asked that loads of times. It'd be interesting to see the results no matter what they go to prove/ disprove. I don't think anyone credible has yet but I havn't looked too hard
I wrote a post on 26th November providing the power and torque output graphs for our 140PS 4WD 6-gear manual Yeti as measured on a dynamometer.. The software upgrade to correct the 'cheat' software was carried out today and I immediately went to have the test repeated. I'm now providing an update and for easy comparison the before and after graphs are overlaid and printed below. The Yeti had the same grade supermarket diesel and the engine was warm. The test was performed on both occasions in third gear as for technical reasons it cannot be done in a higher gear, hence the torque is lower than the manufacturer's figure but the power output is the true value. In any case, the test conditions are identical. The results follow and I am very pleased with them, as you'll see. The power output before was 137.2 HP and after was 139.8 HP, although the difference is trivial. Of more importance is the very close match of both the torque and power curves. I'll be monitoring the fuel consumption closely, but I achieved 48mpg before the change and 47mpg after, although I was pushing the car hard to check on acceleration, which subjectively was just as good as before. So in conclusion, no noticeable change. Incidentally the only 'perk' I received was a goody bag with a Skoda mug, a Skoda notebook, a keyring and a biro. If any problems do arise, I'll give an update.
KCross wrote: » If there was no performance or reliability degradation as a result of the fix why would they put the cheat device in in the first place. There has to be a downside to applying the fix, surely?
jimmycrackcorm wrote: » Cheats moved into the measurement software. billions at stake.
Toyotafanboi wrote: » Maybe its certain drivers, the ones hoping to find side affects, that suffer the worst from them? Just to play devils advocate... What have we actually got in this thread? Some anecdotal testimony of slight MPG decreases, which would be a standard expectation if the ECU software is reset under any circumstances anyway and an EGR failure on an engine that is already famed for EGR failure?
exaisle wrote: » Is there any way of finding out whether the update has been carried out or not (on a second-hand car)? BTW, I have the full version of VAGCOM..
shanec1928 wrote: » it was posted a few pages back if you stick the reg into the campaigns check from vw it should tell you if it's been Downes or is available for that car.
Micky 32 wrote: My EGR failed despite being driven lively. They are a common fault and they will all fail eventually regardless how you drive, still mine lasted nearly 100k miles.
KCross wrote: » My understanding is that that website just tells you if the car is part of the recall but doesn't actually tell you if the fix has been applied.https://campaigncheck.ie/
jcd5971 wrote: » I can't believe I missed this thread EGR went in my 2011 Passat. Absolute nightmare to fix 3 weeks in garage parts replaced but they could not get the lights on dash to stay out. They then came back saying it was the dpf filter causing it and it had to be regenerated ( whatever that meant I dunno). So eventually car back cost well over a thousand to fix but at least it's working. Fast forward 2 months get the letter for the update brought it in get it done,. And boom lights on dash again 😞. Back to dealer they check it and insist it's fine just a faulty wire and to ignore it... Joke
RedorDead wrote: Does your car get regular long motorway trips or is it confined mainly to urban driving? Id say 50-60% of diesel cars bought since 2008 werent actually needed and the driver would have been better suited driving petrol or alternative power but sure we all love the cheap tax!
jelutong wrote: » Check out Autocar Magazine website. Article on the effect of software update on VW Touran Diesel fuel consumption. Test conducted at Milbank Testing Centre.
jonnycivic wrote: » Any chance of an ould summary?
Autocar test shows worse economy after Volkswagen diesel fix
It revealed that while NOx emissions were almost halved from 0.639g/km pre-fix to 0.351g/km post-fix, our test car’s combined fuel economy had fallen from 50.72mpg to 47.61mpg. This means that its CO2 emissions increased from 147.3g/km to 156.9g/km, a change of 6.5%.
In total, three engines are being fixed in the UK by VW: 1.2, 1.6 and 2.0 versions of the EA189 engine. The number of different combinations of car, transmission, engine and so on comes to 750, meaning VW needed to come up with 750 different fixes.
Volkswagen's response to our test “Volkswagen was not provided with sufficient information concerning the testing criteria nor an explanation of how such a cycle is representative of real-world driving. ................ - Despite VW’s claim, Autocar supplied all test details requested by the manufacturer.
joeysoap wrote: » (Obviously the dealer knew).
Stallingrad wrote: » You'd want to be off your head to buy a second hand VW now, such a minefield.
joeysoap wrote: » Just putting this out there for opinions. Has this anything or nothing to do with the fix? Car was perfect until the fix.
grogi wrote: » Yes, it has a lot. By letting more exhaust gases back into the combustion chamber, the amount of emitted NOx is significantly reduced. I can only speculate here - but TDI probably did not really use the EGR that much before the fix. After the fix the engine uses the EGR much more intensely to reduce NOx emissions. The valve was probably on its last legs, but it did not manifest, while the fix just stressed it beyond.
joeysoap wrote: » My son bought a 2nd 1.9 Diesel Jetta from a VW dealer about 2 days before the sh**e hit the fan. (Obviously the dealer knew). But it didn't really bother him. He got the letter from VW to take the car in for fix, which he had carried out last week. Since then engine warning lights have come on 3 times. First time was on the M1 and (to cut story short) VW Swords couldn't find the fault. (Light was out when they towed the car to garage) gave him back the car. After getting the car back the light came back on the next together with another warning light. That was yesterday. Returned the car this morning to the original dealer and that dealer is now saying the problem has nothing to do with the fix and the problem is an EGR valve which will cost him €900 for the part alone. I have googled this EGR thing and it's to do with exhaust gas recirculating back to the engine cylinders. Just putting this out there for opinions. Has this anything or nothing to do with the fix? Car was perfect until the fix. Thanks
Odyssey 2005 wrote: » it is worth nothing now..
