While you have the opportunity, sleeve the 3 bolts on the driver side crossmember to frame attachment point . I just added the front and rear rpm long arms and the driver side needs to be like the passenger side . The frame will distort and crumple under the bolt tension.
Mine was over a month long period of hard acceleration, slow 4 low crawling , in city traffic and highway cruising with cruise control active . Exhaust gas monitor was last to complete after a complete regen cycle occurred. I had an incomplete regen cycle at around 700 miles that caused it to...
I’ve never had any regen message on my 2021 , but I have had it run the fan at max speed for 10 minutes after shutoff . When I restarted it a hour later the banks displayed 8% ..