A work in progress.

[euromodder]

Originally Posted by Piwoslaw

Also, when I have to accelerate from a stand-still, I sometimes skip 3rd gear - from 2nd straight to 4th (3rd should start at 40km/h, 4th at 50km/h). This does get the engine above 2000 rpm for a moment, but it also gets me up to speed much faster.

Getting up to speed fast really seems to help the P+G technique with our engines.

[euromodder]

The first tank while using PP+G-Eon is in : 4.87 L/100km or 48.28 mpg.

Not bad on winter tyres in winter conditions - though the snow is gone, and temps have risen to above freezing most of the time.

On the way home from the fuel station, pulsing and gliding through the city with a thoroughly warm engine, I got 3.2L/100km or 73.5 mpg on the ScanGauge

[320touring]

Originally Posted by euromodder

The first tank while using PP+G-Eon is in : 4.87 L/100km or 48.28 mpg.

Not bad on winter tyres in winter conditions - though the snow is gone, and temps have risen to above freezing most of the time.

On the way home from the fuel station, pulsing and gliding through the city with a thoroughly warm engine, I got 3.2L/100km or 73.5 mpg on the ScanGauge

hate to say 'told you so'

Thats good news-i hope it continues for you!

[Piwoslaw]

3.2 l/100km? That's fantastic!
On my way back from the mountains this weekend I filled up and got 3.8 l/100km for a while, but that went up to 4.2 by the time I made it through the city

And 4.8 l/100km is also great for a non-aeromodded car. Tell other Volvo drivers to beat that!

[euromodder]

Originally Posted by Piwoslaw

3.2 l/100km? That's fantastic!

Unfortunately, it won't last for the rest of the tank

And in March, my favourite short route through town will be cut. No passaran !
They're going to divide the town in 2, almost like Berlin, and cut motorized traffic through the city.
This is triple bad, because I'll have to drive all around the city which is a lot longer, on a ringroad where higher speeds are expected (90kph), with traffic lights without any fixed timing between them

On my way back from the mountains this weekend I filled up and got 3.8 l/100km for a while, but that went up to 4.2 by the time I made it through the city

4.2 is still nice - you're also using P+G I suspect ?

And 4.8 l/100km is also great for a non-aeromodded car. Tell other Volvo drivers to beat that!

It's aeromodded, as I have a 90% grille block

Some other V50 1.6D drivers are getting similar results - though you never know how they drive.
(The linked list excludes the DrivE-models)

[euromodder]

Filled up early to see if PP+G-Eon (my way of P+G) beyond the city limits did much to the fuel economy.
The answer, I'm sorry to say, is it doesn't do much on my actual FE.

The SG gave some very nice numbers for the individual trips and a 4.6L/100km tank average, but they weren't matched by the calculated mpg when filling up (4.88), nor by the car's OBD (4.9).

The SG's steadily dropping average while using P+G was never matched by the OBD I'm afraid.

I'll keep doing P+G in town, as it does seem to help there (OBD average doesn't go up anymore as it used to do), but I'm going to stop doing it on the extra-urban roads or motorway.

Sidenote :
I felt quite tense while doing P+G out on the road, and especially tense on the motorway.
I'd rather drive relaxed

[Piwoslaw]

I remember Groar and Vekke once mentioning that pulse & glide at highway speeds (>90km/h) is not worth while. Of course, the gains are larger you have aeromods and if you glide with the engine off, but even then only up to a certain speed. I sometimes find myself PN(eutral)G-ing between 100 and 80 km/h, but that's mostly from habit. I don't think the gain is big enough to do it all the time, only if the terrain is slightly hilly.

[Arragonis]

Originally Posted by Piwoslaw

I remember Groar and Vekke once mentioning that pulse & glide at highway speeds (>90km/h) is not worth while. Of course, the gains are larger you have aeromods and if you glide with the engine off, but even then only up to a certain speed. I sometimes find myself PN(eutral)G-ing between 100 and 80 km/h, but that's mostly from habit. I don't think the gain is big enough to do it all the time, only if the terrain is slightly hilly.

I would agree with the speed issue, the sweet spot in terms of MPG and distance of glide seems to be about 45-60 mph with a target of about 55. I sometimes have to keep a min of 55 to avoid annoying trucks but if I find one going slower (Morrisons supermarket in the UK have theirs limited to 50 or so I think) then I will just tuck in behind as I'm causing no more of an obstacle on a motorway than the truck on its own. Plus its more pleasant with no pressure, sit back and listen to the radio.

When I started P&G heavily I used to pulse very hard to around 80 at the start of my journey to glide for about a mile on the flat but analysing the avg before and after it seemed worse than just pulsing to 50 quickly and maintaining it on a gentle pedal and high gear for the same distance.

[Piwoslaw]

Hey Euro, I remember that we were once wondering why your air intake temperatures suddenly rise when the diesel particle filter is in burnout mode. Well, I just found out that certain HDi Pugs with FAP have a heater in their air filter box (element #10 on the picture below).



From looking at that picture I guess that the heater is not electric, but may be coolant heated (element #11?)
I've found this heater in the filter box only on the 2.0 HDi model; 1.6, 2.2, and 2.7 HDi models seem not to have one. I can't find a drawing for the 2.0 non-FAP HDi.

[euromodder]

Originally Posted by Piwoslaw

Hey Euro, I remember that we were once wondering why your air intake temperatures suddenly rise when the diesel particle filter is in burnout mode. Well, I just found out that certain HDi Pugs with FAP have a heater in their air filter box

Thanks !

When refilling the windshield washer fluid, I had a look at where the air is going in, and it seems the car has quite a big air filter box that sort of looks like what's on the drawing.

There's a seal between 10 and 11 on the drawing, which would make sense if it's coolant heated, but I can't see a cold return line.

When the weather gets better, I'll get some pics of the engine bay with the cover off.

Is your engine also mounted the wrong way, with the heavily shielded exhaust pointing to the front of the car ?