I don't think there is a definitive answer.
The high exhaust temps could be residual from a recently completed regen cycle, or indicative of one still in progress.
Do you have any problems? I take no notice at all of mine and it seems to be fine.
The high exhaust temps could be residual from a recently completed regen cycle, or indicative of one still in progress.
Do you have any problems? I take no notice at all of mine and it seems to be fine.