Hey guys! havent been active on here for a while but am wanting to get back into more tuning. I live in Cali (i know its lame for moding) and have deleted EGR and DPF on my truck. I altered the stock tune to not report the codes associated with those changes and also made some mods to my timing and pulse width. In doing so i was able to get a sizable increase in MPG and what seems like a little more power. I obviously know that when it comes time for my next emissions test im gonna have trouble with the DPF being deleted and maybe the EGR (i didnt do a full delete, just the blocker plate) but what about EFI Live? Has anyone seen a problem with having a modified tune in their Duramax? will it know if I have trouble codes set to not report?