How to completely get rid of MAF on de-EGR'd TD5

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Originally Posted by sierrafery

i dont have EGT gauge, i keep an eye only on the coolant temp constantly with nanocom, i'm towing a loaded shetland 536 boat with 100bhp engine(around 1500kg) all summer and the temperature is quite often 40*C around here...

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With no EGT gauge. :eek:

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Originally Posted by sierrafery

my dillema still remains that even if the descriptions are highly simplified in RAVE why they dont mention the MAF(being so important) at least once when they describe the addaptive strategy...it's mentioned and described being more important in the V8 section or on freelander engines in RAVE's simplified manner though.... and for thpose engines where the MAF is described being more important than for Td5 is always combined with the IAT like the MAP on the Td5 but the functions are reverted... i reiterate e'g for Td5 they say about the MAF that's only for EGR controll and
1. the MAP/IAT is there:
l To calculate the delivered fuel limits.
l To calculate the air mass in the cylinder.
l To calculate the air speed density.
l To calculate air temperature.

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Easy way to shoot down your argument. In many markets the TD5 does not have EGR. Yet it still has a MAF.
If EGR was the only purpose, you can guarantee LR would have saved the $$ and left it out.

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Originally Posted by sierrafery

and dont forget that at the basics i'm an engineer

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I am also an Engineer. Mechanical who knows how the engine works and what it requires. Not an avionics tech screwing with inputs and treating the engine like a black box with internals that don't matter.

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Originally Posted by rangieman

So to throw a spanner in the works why do mafless tunes on V8 petrols and i do understand for other reasons and they can do so with out the doom and gloom
Yes they are not diesel and yes some are not turboed:angel:

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Look up tables and TPS readings..

Tend to only perform at constant altitudes etc

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Originally Posted by rangieman

So to throw a spanner in the works why do mafless tunes on V8 petrols and i do understand for other reasons and they can do so with out the doom and gloom
Yes they are not diesel and yes some are not turboed:angel:

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With no turbo you can much more accurately estimate what is happening with only a MAP sensor.

But it's still a hack job. In countries with strict emissions controls (US) they don't/can't get away with MAFless tunes. Instead they fit a bigger MAF.

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Originally Posted by Dougal

With no turbo you can much more accurately estimate what is happening with only a MAP sensor.

But it's still a hack job. In countries with strict emissions controls (US) they don't/can't get away with MAFless tunes. Instead they fit a bigger MAF.

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But its still possble and happens with out all the doom and gloom;)

Quote:

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Originally Posted by rangieman

But its still possble and happens with out all the doom and gloom;)

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And is often not running optimum fuelling as they run a little richer to avoid issues.

MAF less tunes aren't done by people chasing a balanced engine performance - just straight power.

ok, i'm gonna fit an EGT gauge after this debate soon:) ... though the fact that nothing bad happened in 30000km should mean something:cool:

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Originally Posted by Tombie

And is often not running optimum fuelling as they run a little richer to avoid issues.

MAF less tunes aren't done by people chasing a balanced engine performance - just straight power.

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This be a qualified indervidual reply :tease:
No im not:angel:

Quote:

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Originally Posted by Dougal

With no EGT gauge.

1. Easy way to shoot down your argument. In many markets the TD5 does not have EGR. Yet it still has a MAF.
If EGR was the only purpose, you can guarantee LR would have saved the $$ and left it out.



2 I am also an Engineer. Mechanical who knows how the engine works and what it requires. Not an avionics tech screwing with inputs and treating the engine like a black box with internals that don't matter.

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i'm still considering it a friendly polemic:) ... that EGT gauge thing is not in vogue in Europe at all

for 1. i must admit my ignorance that i've never heard about this kind of thing... even without EGR the management was conceived to get that 0 - 5V input on that port to not have a permannent air flow fault code logged...it's not about shooting my arguments i made a comparison between two different kind of engine managements and quoted from the book, so you shoot down not my argument, you shoot down what's in the book.... are there Td4s too without EGR on the market ....cos those must miss the BP sensor then:D just joking

for 2 . i'm not treating the engine like a black box i'm "screwing" only with the management which is purely electronic:cool:

imo we must relax a bit on this....i've just shared some of my findings and everybody is free to judge himself if it's wrong or not ... as long as nobody demonstrates with valid arguments that what's in RAVE is wrong i'll stick to my ideea... but i'll stand corerected and admit i'm wrong in front of a real evidence not just opinions

Tutorial....... Tutorial...............

Do I cut the blue wire or the green one.......Or was it the red one.??

JOKE.........

Seriously though .any chance of some instructions for this mod?


Cheers

Cut wire at MAF, plug into ECU pin as in 1st post..

If you're so inclined to risk it