I’ve been doing some research but can’t seem to find a definite answer. I’m looking at buying a 2013 Ram 2500 6.7 Cummins. It is completely stock and I was wondering if I do an EGR Delete and disable it through a tuner to eliminate any codes if I can keep my DPF and DEF or if it will prevent the truck from doing regens and cause the DPF to plug up? I will not be turning the engine up and trying to roll coal. I also have a 30 minute commute one way to and from work daily all highway driving.

 

So if you are going to keep all the expensive stuff, why kill off EGR??

 

Well I will end up deleting the other stuff too it’s more for my own curiosity if I buy a tuner and block off the EGR will the truck function properly until I can get the exhaust work done. Correct me if I’m wrong but it appears I can also just disable the DEF system with a tuner. The problem is I’m not sure when I will be able to have the time to drive down to my buddies house and get my exhaust done could be next month could be next year. but I would like to delete the EGR in the mean time. If I can’t I’ll just live with it for now.

 

I am not entirely sure just disabling it is a good idea. (keep in mind though, I am NOT a diesel tech, and this is just pure speculation) The PCM expects the system to be working, and runs the engine accordingly. The idea behind EGR is to recirculate some of the exhaust gases, to help reduce cylinder temps. If the PCM thinks that is happening, but, actually is not...... bad things can occur. Now, it is also entirely possible that disabling the system ALSO clues in the PCM that it is indeed NOT working, and the PCM will run the engine accordingly. I just don't know which way it actually works. But, with the system disabled, I would think that the PCM simply wouldn't open the egr valve, so, blocking it off, and all the other fun stuff required for physically removing the system, may, or may not, be required.

 

The exhaust system needs the DEF to work properly, tune and delete everything at once to avoid any problems.