Egr off + dpf off, unchanged software
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I would not recommend this, a garage did this to mine and the turtle appears and limp mode. I think think this also was a factor in my EMAP tube getting blocked. The same garage had a tech tuner try to remove all the codes to stop the turtle and that did not work either.
You will likely be better to get the software from here that tunes and minus EGR. You can back up your original tune up, I think. I hear the tuning here is very good.
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@zgr444 Enter your VIN in the search field on the D5T5 homepage. All tuning options possible for your car should be shown. But as your car is polestar tuned, you should try to contact Obbe tuning, who is making all tunes for Vdash, first. The "Original + EGR off + DPF off" tunes are usually based on the non polestar software and would remove the polestar tune from your car. At least for the engine. I have no idea how the transmission part of the polestar tune is affected.
If you have a working Vdash setup, you can also just connect your car and click the engine optimization option to see all options possible. This should check the software version of your ECM, and present tunes based on that.
To tune your car, you will have to crack the ECM pin, and maybe also the CEM pin first. And you will have permanent DTCs afterwards, that will clearly indicate that your car runs with modified software. And if you have to visit a volvo dealer or want to do an OTA update, you will have to revert the car to the original software or the car will be blacklisted/blocked for all software updates/reloads.
