Is the swirl gasket standard on jtd's or a new ammended gasket fitted to egr's?

It was a mod released maybe a year or so ago to help exhaust gases mix better with incoming air.

It may also reduce sooting within the EGR itself but highly debatable I suspect.

Hello everyone I would ask if anyone knows which map to the tap to raise the minimum stylus 1,9 JTD 115cv
Thank you!