Join Date: Sep 2016
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It appears it doesn't
So yesterday I remove all the EGR crap. Yes, as everyone states the back 2 15mm nuts on the EGR cooler are a pain in the rear but patience is needed more than brute strength. More time consuming than anything. I wasn't able to bleed coolant from the allen key bleeder, it's completely stuck and I risked torquing or breaking the fitting/pipe, but other than that it was fairly straight forward. In just a mere 2 weeks, the EGR system already had a lot of soot (I had thoroughly cleaned the entire system at that time) and it's almost criminal that the government would mandate such a stupid idea! Someone should take a stick to the individuals or gov entity who forced this on the manufacturers. I am all for being environmentally conscious without being a far left idiot.
So here are my findings:
1- The EGR DOES NOT get automatically turned off when going with the above tune version and choosing emissions enabled. Reading the H&S manual, it makes it sounds as if the EGR is turned off, you can leave all the connectors on, but the DPF stays operational when choosing "enabled". After the EGR delete kit was installed, I was getting a check engine light and I was getting EGR related codes on the Tuner diags screen. I had to go back in with the tuner and change the setting from emissions "enabled" to "disabled" and after the DTCs were cleared, no issues!
2- Driving in today to work, I saw an average mileage increase of 5 MPG! That is the same route, time of day. and similar daily traffic pattern which is mixed road and highway stop and go traffic of 36 one way trip to the office (I-45 N. Houston traffic and Hwy 105). I purposefully filled up before I performed the EGR delete. When I hand calculated the fuel used this morning, filled up to see how much was used, I went from 15.5 mpg to 20.5 mpg at the pump.
It's like driving a whole new truck! This now leads me to another question:
I haven't bought a DPF delete pipe yet. I have read that the DPF pipe will clog up, but is this something that I need to worry about today or will it take a few days? I have a hard time shelling out $150 for a straight pipe when I weld and can get aluminized 4" exhaust pipe for $10 ft.