LMM Manual Regen?

[Dennison digges]

Bump.

I seem to be having a similar problem my 08 lmm throw code po401 and p1448 along with the clean exhaust filter on the dash. I’ve Manuel Regen with my Cts2 and have gone through about 3 tanks of fuel with out the clean exhaust filter light on the dash turning off. I’ve also started to notice if sitting at a idle for a while I will get a white haze of smoke at witch times I’ll check my injector balance rates and they are high. And once I start driving they will drop a little I am really close to deleting it and going efi live but still scared I won’t be able to find a smog guy anything I can do to try and fix this