I should probably post less and read more, but I am totally confused at the moment.

I think I have way too much on my plate right now other than this stuff, but it's bugging me......

Anyways, I've read posts stating to add the ve adder numbers to the ve #1 table and zero out the ve adder table, and have read to make changes to the ve #1 table and leave the ve adder table alone.

How exactly do you add the ve adder numbers in?

Which way is correct?

I am so confused right now it's frustrating......

(This is for a 1227747 ecm)

 

The VE1 and VE2 tables are always added together. When the end of the 3D table is reached, the last RPM column is used. The adder table continues up in RPM using the last RPM column of the other table, being added to the current RPM row of the adder table.

There is a thread or two in the Tuning Guide Book sticky on this. But they too may be confusing as IIRC, they advocate doing the zeroing out bit.

You can zero out those rows of the adder table that are covered in the 3D table. And of course adding them into the 3D table. Can't do this for the last RPM column of the 3D table though, as it is used for the rest of the adder table RPM entries.

And the VE typically decreases as the RPM increases.

Also when updating the VE via the BLM value, need to add the two tables together, adjust the VE, then split the values back apart. If working on the last column of the 3D table, need to be sure that when split back apart the 3D value remains the same as before.

Yes, a real pain to work with. And make sure that the ECU/XDF file you are working with is correct. MAP is by row, and RPM is by columns in the 3D table. IIRC, there may also be a MAP row missing on some even when the axis are correct.

RBob.

 

I think something clicked and I understand part of it...maybe....

So, here is a screen shot of my VE1 and adder table.



If I understand you correctly, I am going to add 39.06 from the adder table, rpm values between 400 to 2800, to each cell in the ve1 table, columns rows 400 rpm to 2800 rpm, columns 20 to 90, then, divide the blm history average cell from the data log by 128 and then multiply the added table values by that and then subtract the respective adder table value from that, and the result is the new number that goes into the cells respectively.

If that is all correct, then my next question is, I am assuming that zeroing out the adder table is because the numbers were added to ve1, where as, using the ve fixer spreadsheet doesn't add the ve adder tables, so those numbers would be left alone?

Apologies for asking, but I feel like I am learning to read or something all over again.

Edit to add:

There are cells that i won't be hitting very often and I am guessing that until I get those averages for those rarely used cells, I will probably see a more significant change between a modified cell and one that isn't due to lack of use.

Are those just left alone or is there a "smoothing" calculation? What kind of effects would be seen if nothing was done to those?

 

Here is the screen shot of the ve1 corrected table.

So, all the above what I wrote, but applied to this table?

 

I deleted it because my reply was incorrect. At some point along the line someone changed the XDF file to swap the X & Y axis. This stuff drives me crazy because it becomes difficult to know what is correct and what is wrong.

I prefer the tables to resemble the order they are in within the code. Makes it much easier to double check that things are correct.

This also affects my previous un-deleted reply that is now wrong in it's explanation, as to having RPM as the columns and MAP as the rows.

RBob.

 

RBob,

And therefore when tuning, you need to take into account the TOTAL VE (main table + adder)for the change whether + or -. If you don't, you'll be making smaller incremental changes which eventually will get you there.

 

Rbob,

I deleted what you had written and deleted to avoid more confusion.

I am still confused about the tables and have read through the stickies, which did not make much sense to me.

I'm guessing that the ve fixer spreadsheet doesn't apply to this ve table for the 1227747 ecm?