How to change EGR map in WinOLS tuning software

It’s a WinOLS tutorial of how to change EGR map in WinOLS tuning software.


Disclaimer: Carry out this procedure at your own risk.


What is EGR?

EGR refers to Exhaust Gas Recirculation. To remove EGR function is a common change that people want to make.


Why do you need remap the EGR map?

On Pre-PD engines, it’s easy to do mechanically by blanking the EGR pipe off or just pushing the valve shut and removing and closing the vacuum pipe that controls the valve.

If you do this on a PD engine you often get a fault code warning on the dash.

One way to delete the EGR function on a PD engine is to blank it off (you can just leave it shut) and remap the EGR map in the ecu.

Removing EGR function by changing the map can still lead to a fault code being flagged. If that happens , change the max settings to about 95% of max rather than 100%. That should prevent a fault code.


Is it dangerous to change EGR map?

Definitely dangerous to make changes to the ECU maps to the engine, so be very careful.

Note: This is the best first change to attempt.  If it goes wrong, you are not likely to damage the engine.


How to change EGR map in Winols cracked?

Hopefully, you can find EGR map.

Here goes to EGR map change…

The EGR map interface:


Click on “EGR” map on the main screen or the “EGR” name in “My maps”

Pop up EGR map, shown in 3D view


Probably it’ll open in text view. If not, change it to text view


The WinOLS V1.500 text view numbers tell the ecu what it should be telling the EGR valve to do.

Look for the highest number (here: 850). This “highest” number tells the EGR valve to stay shut.

You want to change the whole map, so every number is 850. That way the EGR will stay shut and not recirculate exhaust gases.

To change the values, click and drag to highlight them all.


With the numbers highlighted, go to the toolbar, click on “Edit” followed by “change absolute” (or just press the “=” key)


Pop up a new window with “Shown value” highlighted- first value: (top left corner)


Change the number you want to the highest value on the map (usually about 800-1000)

Then click on OK


Note: you may get a “warning” pop-up. If you do, choose the first option (switch off protection) and OK. If you don’t do this the changes won’t happen.


Numbers that have been changed will be red (here: 850).


Switch to 3D view, and any original values on the graph are black and the changes you have made are red.


close the map window, and similar changes have happened to the “hexdump”


Note: Any changes you made in the map will be automatically made in the “hexdump”. And the changes will be made using the correct values for the hexdump.

So if you had 850 set on your map as 8500 because you forgot to change the factor to 0.1, it doesn’t matter. Winols will have changed the hexdump value to the correct value of 08500.


The best way to test that you have been successful is to drive the car and log with VCD-S cable. Engine measuring block 003 will show you EGR specified and EGR actual. These should both read constantly at 850 or what ever value you set.


Anyway, good luck with EGR remap.


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