Miller WAR Chip software load axis

[E30-325iS]

Does anybody know how to convert something that I can measure, like MAF voltage, into the millisecond values used by the WAR Chip software?

[jlevie]

That question doesn't make a lot of sense to me. Perhaps if you told us what you were trying to accomplish we could be of help.

[Pedaaa]

what is wrong with this question??

I have exactly the same problem.
I have no idea what the WAR-Chip load axis should tell me.

If you want to do some proper tuning, you need to know at which load your engine is currently operating. Everything else is just guessing and nearly useless.

I already wrote some emails with this question to miller, but got no answer.

[E30-325iS]

What Pedaa said, although I have not written to Miller.

I'm trying to tune the car by modifying the various maps available in the WAR Chip.
In order to know which cell to modify it is necessary to know the RPM which is easy, and at what load the engine is at.
The maps are displayed as a table with RPM in the vertical axis and load on the horizontal axis in milliseconds. Megasquirt, for example, uses RPM on the horizontal axis and load on the vertical axis in kPa which is easy to measure.
I would like to know if there is a way to take a value I can measure, for example the output from the MAF sensor, and convert it into the millisecond value used by the WAR chip.

[E30-325iS]

Picture as promised. I think this will clarify things a lot as expressing load in ms is not intuitive.

[88SuperETABD]

I asked that same question to a friend that knows MS, I will be installing my MAF/WAR Chip soon, and would like to know this...

[brody]

The Load MS is injector Milliseconds. It isn't perfect but it is the closest thing to let you know where you are at IF you have a good data logger. However, don't be intimidated by the load. It is actually very easy to tune without seeing a little cursor to tell you where you are. Clarifiction: Load isn't one specific measureable thing per say, injector MS will get you close enough and that is why we chose to display that axis like that.

Also it doesn't read one specific cell, it is also referencing the cells around it. the key is to keep the map smooth. If you were to export the map data into excel and make it into a 3D map, you would want it to me as smooth as possible.



If you worry about cell by cell values you can have an ugly, choppy timing curve that will not feel smooth at all. like this:



GROSS!

Fuel is the same thing you want it as smooth as possible.

Now the grand question, where are you? when you are at a steady cruising RPM with no real load on the engine except for that which keeps you moving on a flat surface at the same speed you will be in these columns.



Remember, you want to make changes to the cells in that area at the given RPM because the goal is a SMOOTH map.

When you are accelerating in P/T you will be in these columns



Again, changing these values at the respective RPM will give you the results you need.

What about the columns in the middle? Those act as the transition between steady cruise and accelerating. Some times when you are going up a hill without needing to punch it more, you will move into those columns but again, smoothness is the key here.

The easiest way to figure it out if this explaination doesn't help is to make a BIG fuel change in an area of the map and find it with your foot and the wideband. You will learn VERY VERY quickly how the map works and then you will laugh at yourself for being so scared of it.

A little bit of motivational advice... How do you think the newest e9x m3 supercharged cars are tuned and developed? BLIND! To my knowledge they still do not make an emulator for those ECU's so they are doing EVERYTHING the way you do with the WAR Chip, not in real time. Our ECU's are like Kindergarten math compared to the new ones and look how easy they make it look :p

[kamotors]

great advice!

[Denny]

Damn Brody, you should make more of these and add them to a section in millerperformance website....very clear, simple and very well done!

Admins should Sticky this ASAP!! lol

Now make one for those that want to use bigger injectors(30#) and your Gen III Race MAF(the one used with the Psyk kit M20) please :)

[E30-325iS]

Thanks for the detailed reply Brody.

[kamotors]

Used a 3d map to smooth out all of my tunes, my current tune looked horrible!

[brody]

Used a 3d map to smooth out all of my tunes, my current tune looked horrible!

Is it getting better now!?

[u3b3rg33k]

Subscribing to this extremely useful thread. Thanks for making it, and Brody for posting in it.

FYI, still in love with the MAF/tune - I still smile every time I hear 4k RPM come and go.

[kamotors]

Is it getting better now!?

lol no:( its "better" but drivability is still rough. Basically its just too rich every but WOT now, WOT is perfect.

[ilateapex]

How is the tuning going? I am doing this process on an S14 and have a few hiccups. I may try the 3-D graphing and see how it looks.

How are you guys doing the timing tuning? Worried about knock?

Michael