While the 8hp increase over the stock 250hp isn't astounding (given the cost of Polestar software upgrade), it's the increase in the mid-revs that attracts me. What are people's thoughts on upgrading? Are there any known issues/problems? I understand it tunes the shift points too. Personally, I find the OEM shift points on the stock V60 a little playful, especially on slight incline at 30-40mph. Gears seem to go back and forth as if they're lost. I have a dealer appointment scheduled and am wondering whether to have them do the Polestar software or not. I'd love to hear your thoughts.