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The lounge Relax, take a break from photo and camera talk - have a chat about something else for a change. Just keep it clean and polite!

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  #211  
Old 18th December 2018
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Naughty Nigel Naughty Nigel is offline
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Re: The Peugeot Diesel Pollutant Saga

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Originally Posted by Harold Gough View Post
As my car is French-made, I can put on a yellow jacket and pay no tax at all!

Harold
That's OK. The Brits will pay it for you; until March at least.
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  #212  
Old 18th December 2018
DerekW DerekW is offline
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Re: The Peugeot Diesel Pollutant Saga

There is quite a small industry doing remaps for Volvo diesels. Volvo actually market one type of remap - The Polestar - it extends the torque over a greater range of engine revolutions.
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  #213  
Old 18th December 2018
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Naughty Nigel Naughty Nigel is offline
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Re: The Peugeot Diesel Pollutant Saga

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There is quite a small industry doing remaps for Volvo diesels. Volvo actually market one type of remap - The Polestar - it extends the torque over a greater range of engine revolutions.
Interesting. Volvo must be about the only manufacturer to actively endorse remapping. The claimed power gains from some diesel engines are quite staggering too, with 25 - 40% being easily achievable it seems, and with fuel savings too!

Gains from petrol engines are much more modest, but there are other advantages including a reduction in engine wear (through less dilution of lubricating oil).

It is interesting that many car manufacturers (notably BMW) now use one common engine across several models, with differing engine outputs achieved entirely by electronic means, so no more high-lift cams, polished ports or high compression heads.
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  #214  
Old 18th December 2018
Jim Ford Jim Ford is offline
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Re: The Peugeot Diesel Pollutant Saga

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Originally Posted by Naughty Nigel View Post
Gains from petrol engines are much more modest, but there are other advantages including a reduction in engine wear (through less dilution of lubricating oil).
I've considered having my Skoda Octavia VRs remapped for lower down torque. There's 180 horses under the bonnet, but they're temperamental arabs. When I'm towing a trailer I need cart horses!

Jim
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Old 18th December 2018
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Re: The Peugeot Diesel Pollutant Saga

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I've considered having my Skoda Octavia VRs remapped for lower down torque. There's 180 horses under the bonnet, but they're temperamental arabs. When I'm towing a trailer I need cart horses!

Jim
As you will know Jim more power = more torque and vice versa.

Remapping is claimed to get rid of flat spots which are a particular problem in naturally aspirated petrol engines; but anything that optimises the fuel/air mixture throughout the engine speed range will provide a wide range of benefits.

With reference to another thread I wonder how much fuel and emissions would be saved if every car was remapped for economy rather than using the manufacturer's 'safe' default values? All they are doing is saving a stage in the manufacturing process.

I believe many fleet vehicles run by big operators (Royal Mail, BT, Etc.) are remapped as a matter of course.
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  #216  
Old 18th December 2018
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Re: The Peugeot Diesel Pollutant Saga

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As you will know Jim more power = more torque and vice versa.
Oh yes - 2πNT/33000 earned me my bread and butter when I worked on helicopter gas turbine testing when I'd finished my apprenticeship!

Jim
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  #217  
Old 23rd February 2019
Harold Gough Harold Gough is offline
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Re: The Peugeot Diesel Pollutant Saga

Another revival of this saga!

Today, hopefully, saw the problem solved.

The blocked filter messages had been appearing more frequently that ever, in spite of my very low mileage. My mechanic did a house call with his code software but could not get the vehicle to do a forced recycling of the filter. It ran but to no effect, the diode display still saying the filter was blocked.

Then he gave me some encouraging news. There was an Italian specialist in town who was brilliant at dealing with ECUs. I finally had to get my car MOTed, the Tax also expiring next week. It seemed that the Italian might be available.

He was and (using Peugeot software) diagnosed an open circuit on the integral ELOYS tank pump. A replacement unit was required and I opted for a new one instead of a used one (half the price). I asked for 3L of fluid to be supplied, the tank holding 5L but at about £40/L.

All was done and then there was a sensor error. A pressure sensor on one side of the filter had been subjected to excess pressure. A new one was fitted.

I got the vehicle back about an hour ago, after it being away for a week.

My mechanic had obtained 4.5L of fluid (updated version) for £100. The Italian had probably remapped my ECU as a bonus. (His English is not too good).

The whole job cost about £700, including all the electronic work for £50, the dealer test (open circuit not detected) with no remapping having previously cost £90.

I now have a car with 16,000 miles on the clock which drives accordingly.

I have yet to take it for a run.

Harold
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  #218  
Old 12th March 2019
Harold Gough Harold Gough is offline
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Re: The Peugeot Diesel Pollutant Saga

I have run the car (not a great deal of mileage) for two weeks since to new tank and pump were installed during which I would previously have expected several messages to clear the filter and at least one limp mode episode.

I have experienced none of the above.

Harold
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