Rawze's EGR tuneup

[Rawze]

* all new sensors if they are old.

* clean out the EGR valve if it has not likely been done in the last 400+k miles or so.

* carb/choke cleaner is fine for pipes.

* Check the circuit that runs thru the thermostat housing for the exhaust pressure sensor too while you are at it.

* Inspect and clean or replace the Doser injector while at it too.

* replace the DPF Delta-P sensor and inspect its cross-tubes + connecting joints for cracking / rubber cracked, etc.


* If it has been more than 250k miles, maybe pull the DPF and DOC filters, take pics of their faces, and send them to an OEM facility to have them baked, de-ashed, and flow tested .. then do a DPF replacement procedure in Insite software to go with it.