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OMG! Had my 08 6.4L deleted this morning. What a difference in operation. Edge CTS2 w/monitor, dpf delete and new exhaust pipes past it.
Not very loud at all, but a good wooshing sound coming out the tailpipe. Like it can breathe again. Only cost me $1620 for everything and labor. Wanted to keep the old dpf to put on my fireplace mantle as a conversation piece but they had to cut it up to get it past the bracing. If I need one someday he said he can find me one. Should have done this long ago.
Found a great diesel repair and performance shop near my house. Even my dealership recommended them, and even said I should delete. Probably didn't want to see me ever again after all my griping.
I did not do the EGR delete. Two different shops said not to delete that. I've read pros and cons, and they've been evenly divided as to yes or no. So at this point, I opted not to delete (yet).
Pros:
You can actually see parts of the engine you knew existed but could never find.
2 or so less gallons of antifreeze
no chance of having a cooler leak and hydro-lock your engine(not a big thing with the 6.4)
nothing but a clean charge of air flowing thru your motor at all times
a few that I come up with right away
Since most delete tunes command the EGR shut, there isn't a whole lot of a downside to not deleting the EGR system, as it isn't used.
The only real con to not deleting the EGR along with the DPF is it leaves an unlikely, but possible, point of failure.
If I had a 6.4 and decided to delete, i would leave the EGR system intact, but would make sure it doesn't get used via tuning.
Kind of apples to oranges, but i have an upgraded EGR cooler in my 6.0, but it doesn't get used, due to my tunes not running any EGR. If i have emmisions testing in the future, i just have to install the catalytic converter back in place and go back to stock tuning. I would imagine it is similar with the 6.4 and the DPF, plus a couple sensors.
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