vems mat enrichment firmware 1.1.44

[Arvid]

Is there someone who has some suggestions for a ok  "mat enrichment table", that I can use?
 I've firmware 1.1.44 

[dnb]

What engine?

[MWfire]

Can you give me suggestion for opel 2.0 8V engine(no turbo for now)?

[Arvid]

What engine?

It is a Volvo B230, 4syl, without  turbo, 

[dnb]

What engine?

It is a Volvo B230, 4syl, without  turbo, 

First guess would be something like
0% from -40C to 20C, and ramp up to 15-20% by 60C

[gunni]

This is based on the standard pressure / temp and biased at 20C.

it wouldn´t be right to not put more fuel in as charge get´s colder , meaning more and more density , meaning more oxygen in the same volume.

[GintsK]

My table:

[dnb]

it wouldn´t be right to not put more fuel in as charge get´s colder , meaning more and more density , meaning more oxygen in the same volume.

I was under the impression that MAT enrichment was an additional offset to GammaMAT found in the ideal gas equations the ECU does to work out the fuelling.   

Is this not the case with 1.1.44?  I know it is with 1.0.79.

[rob@vems.co.uk]

First guess would be something like
0% from -40C to 20C, and ramp up to 15-20% by 60C

Don't forget that the system is biased around 100%.  So no change is 100%, -10% would be 90% and of course +10% is 110%

[gunni]

it wouldn´t be right to not put more fuel in as charge get´s colder , meaning more and more density , meaning more oxygen in the same volume.

I was under the impression that MAT enrichment was an additional offset to GammaMAT found in the ideal gas equations the ECU does to work out the fuelling.   

Is this not the case with 1.1.44?  I know it is with 1.0.79.

I belive this is that table and is now editable.

[GintsK]

it wouldn´t be right to not put more fuel in as charge get´s colder , meaning more and more density , meaning more oxygen in the same volume.

I was under the impression that MAT enrichment was an additional offset to GammaMAT found in the ideal gas equations the ECU does to work out the fuelling.   

Is this not the case with 1.1.44?  I know it is with 1.0.79.

Here is Andreys answer:
http://www.vems.hu/wiki/index.php?page=MembersPage%2FAndrey%2FMatTable
In short - MAT table is only correction.

[dnb]

So a retrograde step in the new firmware then.