My name is John.
My truck has a 14L Detroit Diesel. Being a 2005 Freightliner, it had EGR when it was new. Being housed in the deep south of the USA, that came off some time ago. But now my interest is in CAT. Particularly, the DPF models. My friend has a c13, and since he already gutted the filter out... he needs to make the ecu happy with that fact.

That's what I hope I can get help here with.

Cheers!