Author Topic: Naughty naughty VW  (Read 20559 times)

Offline robtt

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Re: Naughty naughty VW
« Reply #20 on: 23 September 2015, 12:04 »
I do wonder if the petrol cars are subject to a similar cheat ? If so we might find ourselves paying more road fund licence and business user taxes ?

Offline Organisys

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Re: Naughty naughty VW
« Reply #21 on: 23 September 2015, 13:02 »
VW were caught playing part of a bigger game that all corporations play. It's a fine line and they just crossed over onto the wrong side.

The 'test's are a joke anyway. defeating or cheating them is trivial with the resources manufacturers have.

Bit of bad press, an 'investigation', a change of some management, some legal wrangles. Storm blown over.

Buy shares, in 5 years you will be laughing.

... it's turned into a fashion show for poofters.

Offline Exonian

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Re: Naughty naughty VW
« Reply #22 on: 23 September 2015, 15:42 »
CO2 emission regulations are such a hypocritical waste of time. The car corporations themselves are hardly resourcefully efficient.

My thoughts exactly.
And millions of other people too no doubt, but common sense and legislation very rarely go hand in hand.

The jokes and 'panic' over VW resale prices started in work yesterday and will be in full swing no doubt for a while so I'll be wearing my hard hat despite driving a petrol engined car (that most people think is a Diesel anyway).

I wonder how the footfall into VW dealerships will drop away worldwide during the initial panic and internet fuelled hysteria stages ramp up to full steam.

This autumn and winter could be a good time to buy a new or used VW vehicle and it will be interesting to see if the generally ignorant public will just see the VW part of it and ignore the other VW bands whose sales might not be so adversely affected just yet.

A nice political deflection from the massive migrant crisis for European politicians anyway.


Lots of coverage of why VW were caught with their trousers down but still nothing on why the flag went up in the first place, if the cars were programmed to bypass any random inspections then who decided to test one or more in a different way and why?
Were VW grassed up?
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Offline fredgroves

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Re: Naughty naughty VW
« Reply #23 on: 23 September 2015, 22:28 »
Lots of coverage of why VW were caught with their trousers down but still nothing on why the flag went up in the first place,

Answer is here: https://www.extremetech.com/extreme/214605-vw-caught-cheating-on-diesel-emmissions-standards-ordered-to-recall-500000-cars
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Offline Waspy

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Re: Naughty naughty VW
« Reply #24 on: 23 September 2015, 23:43 »
I was pondering earlier...

Since the way they did it was to detect when the car was on a rolling road and then switch to a "clean mode" does that mean people who remapped their diesels were actually remapping against the non-standard map? Assuming they didn't have it real world remapped...
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Offline Exonian

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Re: Naughty naughty VW
« Reply #25 on: 24 September 2015, 04:52 »
Lots of coverage of why VW were caught with their trousers down but still nothing on why the flag went up in the first place,

Answer is here: https://www.extremetech.com/extreme/214605-vw-caught-cheating-on-diesel-emmissions-standards-ordered-to-recall-500000-cars
Ahh, that explains a lot.
Thanks Fred :afro:

I was pondering earlier...

Since the way they did it was to detect when the car was on a rolling road and then switch to a "clean mode" does that mean people who remapped their diesels were actually remapping against the non-standard map? Assuming they didn't have it real world remapped...
The test cycle detection program would only be triggered under certain circumstances at certain throttle loads. I can see what you're thinking but re-mapping would navigate through or past this cycle and indeed the car might even still revert back to 'test cycle' even when remapped if the correct conditions were presented.
I think we've seen enough rolling road graphs now to see that the mapped cars are ok.
Proper re-maps will detect any flat spots during the code reading stage and they'll overwrite them to give a much more responsive drive.
Early days yet but I expect a few tuners will have a look at how VW write the cheat cycles into the ECU as basically they're factory remapping the engines but de-tuning them instead of blasting out more power.
If the tuners can tap into that they might be able to introduce features of their own.
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Offline monkeyhanger

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Re: Naughty naughty VW
« Reply #26 on: 24 September 2015, 07:50 »
I do wonder if the petrol cars are subject to a similar cheat ? If so we might find ourselves paying more road fund licence and business user taxes ?

Doubt it very much. NOx is produced at very high temperatures and pressures, the kind you see in diesel engines, not petrol engines. Diesel autoignites at around 800C, petrol ignites under spark at around 130C, reaching a max of around 250C.

Additionally, diesel combusts in a greater excess of air than petrol inside the engine.
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Offline monkeyhanger

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Re: Naughty naughty VW
« Reply #27 on: 24 September 2015, 07:53 »
I bet I won't be able to take advantage of this "scandal" to negotiate anything further on Saturday when I pick up the wife's shiny new Audi A1 1.6TDI Sport.
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Offline fredgroves

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Re: Naughty naughty VW
« Reply #28 on: 24 September 2015, 09:03 »
I'd try it on MH.... "my wife isn't sure she wants the car now, she's very concerned about the health of the flowers and kittens but if you gave her a 100 quid in cash for a donation to greenpeace she'd be prepared to carry on"

:D
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Offline monkeyhanger

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Re: Naughty naughty VW
« Reply #29 on: 24 September 2015, 09:21 »
I'd try it on MH.... "my wife isn't sure she wants the car now, she's very concerned about the health of the flowers and kittens but if you gave her a 100 quid in cash for a donation to greenpeace she'd be prepared to carry on"

:D

Might ring up Audi UK - perhaps they are giving out £250 high street vouchers?  :evil:
Whey ya bugger! It's finally arrived after an 8 month wait....
MK7 R 5 door, manual, Lapiz Blue, Prets.