5. Winols...Making map changes...EGR example

EGR REMAP

MAKING CHANGES TO MAPS

Making changes to the ECU maps can be very dangerous to your engine, so be very careful.

A common change that people want to make is to remove the Exhaust Gas Recirculation (EGR) function.

On Pre-PD engines it is 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.

CHANGING THE EGR MAP. This is the best first change to attempt. If it goes wrong, you are not likely to damage the engine.

Hopefully you know how to find your EGR map in Winols. It looks like this;

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