I can't seem to find a table labeled "boost". Is it labeled something else? If so, what is the label and how do I get to it. I'm trying to create a valet map.

 

It is labeled "unknown". It will be the table with 100's in it.

 

Thanks. I noticed the rpms on the x-axis. What does the y-axis represent?

 

I believe it is "load"

 

i thought it was rpm and throttle position... but i may be wrong

 

Its RPM on the X, and Calculated engine load on the Y.
The root of load is based off the Maf reading.

 

so its basically map read.... im assuming there is some constant multiplied to the map read to give a "load"

 

Stand alones often base their load off of map, but most OEM computers do not.

 

Why did you choose load as the Y axis? Load is pretty damn close to "boost." And that is what you are trying to control. It is like you have a 3D table with 2 of the axes being the same thing.

I suppose you can try to force the boost to be 20psi at a calculated load of "5psi" (really measured in airflow/revolution inside the ECU), but that doesn't really make much sense to me.

 

For Subaru it is.

 

What if you are running a serious ALS where you could keep 20 psi at a low load? At least it has the ability to tune in 3D for those cases that it may be needed.

 

When I run my stutterbox at a standstill, the ECU's calculated boost (derived from airflow per rev) and my actual measured boost with a MAP sensor are pretty damn close.

The MAP is a lot smoother, due to the restrictor I have in the line. But the peak of the calculated boost matches very well with the MAP value.

Even with an anti-lag system, the results should be the same. I'm not sure why you think calculated load curves and boost curves shouldn't match. Though a lot of people have an odd idea of what "engine load" is.

Hell, even when I am between gears during a drag pass with the clutch in, the throttle wide open, and the engine revs falling to meet the next gear ratio, the calculated boost and MAP sensor match. In that case, boost falls from 25psi down to ~15psi while I am shifting. Once I let the clutch out, boost gets back up to 27psi within .4 seconds. What's lag?