With all this hot weather here in Winnipeg along with a few days of autocross seems to have triggered an AC issue. I just noticed recently that after a bit of driving where the car has come up to temp at idle with AC on the rpm fluctuates up and down. As soon as I turn the AC off the rpm stabilizes. Originally I thought it was only happening after an autocross event but now it's happening just going to the grocery store lol. I googled it and there are some posts on the US forums including a tech bulletin on AC problemscbut more related to temperature issues. Going to dealership tomorrow but would be interested to hear if anyone else has experienced this.