Table Modifier - The Scan Data Thingy

Volumetric Efficiency Tuning

This is the main screen. the first thing you would want to do is to import a current scan generated by the PowrTuner software. The vehicle should be scanned after enough time as passed for your fuel trims to have stabilized. If you don't give the PCM enough time to learn the fuel trims, then no modification will ever be accurate.

Click "Import Scan Data" and locate the scan file you want to import

The first thing you will notice is a message box explaining what you need to have in your scan. Here are the requirements and recommendations for MAF, VE, and Spark tuning

When you import your scan file, a check is made to verify you have the required fields for a MAF and VE tune. If you had only the LTFT, RPM, and MAF, then only the "Import MAF Table" button would have been enabled. Because the imported scan has at least the minimum required fields, the "Import Scan Data" button turns green. Now, click on "Import VE Table" and import your current VE table (this would be exported from the PowrTuner software).

If you imported a valid VE table, then the "Import VE Table" button will turn green and the "Export VE Changes" button will be enabled. Now click "Export VE Changes". You will see the Options window:

Note: These next pictures are from the current version of this program. If your version does not have the same options, downlod the newest one. There is a link to it on the bottom of this page.

The following options are available if the required PIDs are logged in the imported scan file:

Basic Options

Advanced Options

Fuel Cell Specific

This option allows the user to filer a TPS range within a specific fuel trim cell. You could use this option to filter a portion of a fuel cell. If example, if you wanted to fine tune fuel trim cell 2 when the TPS is above 1%, you could set this here. This filter is applied after all other filters, so if you selected FTC 2 on the Advanced Options tab, then selected FTC 2 between 1 and 5%, that is all that would be changed. Anything not within this range will retain the original table values from the imported MAF table.

Misc Filters

When the options screen pops up, all the selections default to what I have found the spreadsheets use. Again, I didn't design the spreadsheets, and they work VERY GOOD. The only problem I see with them, is they don't allow these options, or ease of use. A lot of people prefer to use them, I don't want to take anything away from that. I would recommend using them along with this program. this application is not a cure all by any means.

When you have made your selections, click "Finished" and select the location and name for the new VE table

When your new VE table has been generated, a popup will tell you the program is finished, the location of the new VE file, and the location of the report that is generated.

For an example report, Click Here

If you selected the "Show VE Change Details after exporting new table" option, then at this point you will see the following popup

The displayed grid is split in to 3 sections.
  1. The first section gives you the average long term fuel trim for each cell in the VE table.
  2. The next section shows the adjustment made to each cell in the VE table
  3. The last section shows the adjustment as a percentage that was applied to each cell in the table. If you chose 100% in the options screen, then this secion would mirror section 1

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