I recently purchased a 2011 6.7 from an auction. It has a sinister diesel EGR delete. The truck is obviously tuned but the tuner didn’t come with the truck. Can anyone offer suggestions on the best rout to take with this issue? The truck also has the DPF. Shouldn’t this have been removed with the EGR? My intentions are to delete the DPF and install a tuner. What DPF delete should I use for this truck and what tuner should I purchase. It’s my thought that I’m gonna have to pay to tune the truck back to stock then install the tuner. I will have to have the tunes created that allow for the EGR and DPF delete. Has anyone seen a DPF gutted and left in place for inspections?