P38A 2.5TD engine torque maps

Datatek said:

I doesn't matter how much evidence you provide to the contrary, Wammers will not accept it. Even the final version of RAVE states that the MAF is used for fuelling.
I came to this with no knowledge and did a lot of research to find out how it all worked, so I'm happy that I have the right conclusion, I have provided info from other sites to support my position, Wammers on the other hand just keeps repeating the same thing over and over with no independant supporting evidence.
Think about it, if the EDC can read the MAF, why would you not use it to trim fueling? It allows fuelling compensation for engine wear, altitude etc, it would be illogical to fit and expensive component, re-write the EDC software to read the values and then ignore them for the most part. With the EGR blocked, according to Wammers statements, the MAF should have no effect and therefore it should be possible to disable the hot wire part leaving just the inlet air temperature sensor in place. Try it, you will find that the engine does not run as well, although unlike a petrol it still runs well enough as it relies on the default maps.
Even when a guy smart enough to decode the fuelling maps and modify them states that the MAF is used to trim fuelling, Wammers will not have it.
I don't much care either way, but I think both versions should be presented so that peeps can make up their own minds and not be led in one fixed direction

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wammers said:

That is because it is not true. BMW agree with me why will you not?

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gfromleeds said:

Subject change lol
is it normal to give a puff of smoke on start up?
Couldent tell you the exact colour cos its usualy dark when I go to work but I would say more gray/blue (oil)than black but I only just catch a glimps in the reverce lights and it stops within the time it takes to get round to the back of the car
only just noticed it but could have been doing it a while
couldnt tell you if its useing oil cos its a rr and most of it comes out the bottom
but hey at least I dont need to do oil changes cos I do a progressive oil change constantly
(Lol only joking every 8k religiously)

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Datatek said:

Perhaps because you have not provided any independant evidence to support your position. There is stuff about MAF and fueling on BMW sites.

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Grit Valve said:

Well what can I say my car doesn't momenterly miss a beat any more so its either the wires I cleaned or the maf I cleaned with electrical cleaner , I must unplug mine for a week or so data see if I notice any changes I have unplued the maf for a short time before but I didn't notice any changes maybe becuase the default takes over I will leave it of for a few days and see if I notice any changes if it does do egr only then it won't but if my fuel goes up and the car feels strange or underpowered then I would say it does have an effect on engine running I'm with you in this one .

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Datatek said:

Unplugging the MAF also removes the inlet air temperature sensor thermistor.
The changes are not huge with just the MAF itself disconnected as it reverts to the standard fueling maps, you may see a short burst of smoke when you floor it at low revs as happens on the pre MAF engine and it affected low end performance on mine plus fuel consumption. No smoke on mine normally even from a cold start when my wife uses her divers boot to accelerate away up the hill from out house. The 96 smoked under those conditions.

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Datatek said:

Unplugging the MAF also removes the inlet air temperature sensor thermistor.
The changes are not huge with just the MAF itself disconnected as it reverts to the standard fueling maps, you may see a short burst of smoke when you floor it at low revs as happens on the pre MAF engine and it affected low end performance on mine plus fuel consumption. No smoke on mine normally even from a cold start when my wife uses her divers boot to accelerate away up the hill from out house. The 96 smoked under those conditions.

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