2016 isx15 2350 x100 cummins

[catnred]

Thanks for the response.
the mileage is 400k it has been doing this for about 2 years.
I don't have insite,scr was just serviced doser was 70 % plugged cleaned it,filter changed,
soot load normal,intake temps,550 & 890 outlet temp.1195,differential pressure 1
cans removed and baked at 200k,egr cleaned
fuel pump updated