Parameter Questions While Working With Detroit Diesel Calibration Tool

[ccwtruck]

I am presently working with DCT and trying to research many of the parameters used in my own engine's calibration file. I am hoping that someone with more experience than me can answer my questions. This thread can also be used for questions from other DCT users, which would add to the knowledge base to benefit all of us.

My first question concerns the so-called "Low NoX Programming": Is there a separate section within the cal file that deals with these parameters, or do they simply make changes to the "Shared" -> "CONTROL DATA" -> "BOI Control" parameters, or do they pertain to the parameters under "Shared" -> "CONTROL DATA" -> "Adaptive Timing"? I was told that, when my engine was rebuilt 2 years ago, the shop re-programmed it with the "Low NoX Programming" -- which is known to kill fuel mileage and power; however, now that I have access to the calibration file, I can see from the audit trail that no one has been in that ECM since it was originally programmed at the factory/ dealership -- there is only one tool ID listed, back in 1994.

So, my question would be -- how do I determine if this shop actually did re-program the ECM, or if they just lied & put a phony sticker on the valve cover?

Then, if they did actually re-program it, how do I remove/ reset that programming back to normal?

Thanks in advance for the answers!

[ccwtruck]

Alot of guys don't know it, but you can easily retrieve all of your ECM passwords directly from your ECM calibration file in Detroit Calibration Tool, even the backdoor password.

In Calibration Tool, open a Command Panel (select File -> Open -> Panel, then double-click on the "Command.pnl" file) with the ECM connected.

On the Command Panel, you click on the button "Upload Calibration".

DCT will open a file dialog for you to select the metafile that matches your ECM software version number

Select a metafile, then click on "Open".

Then just sit back and watch as your ECM calibration magically appears in DCT's left-hand pane under "Calibration Manager"

Once it's done, you can click on File -> Save As and give it a file name.

Click on "Save", and your ECM calibration is safely on your hard drive.

To get all of your ECM passswords, including the Backdoor password, follow the tree down through your cal file to "Shared" -> "CUSTOMER CHANGEABLER OPTIONS" -> "Passwords"; double click on any of the 6 entries underneath, and it will open an edit table control.

Each character is in one cell of the table, but it is in numeric ASCII code -- you will have to look up the character represented by each number, for example if the number is 65, that's an "A"... 66 is a "B", and so on.


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