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Does anyone else's 6.4L cough/sputter between 1,700-1,800 rpms?
My truck seems to cough/sputter between 17-1800 rpms. I recently had it returned to stock for about 3 weeks and it did the same thing but not as bad as tuned. I had the egr vavle replaced while stock and thought maybe that had something to do with it, but nothing changed. I don't remember it doing it this summer while temps were warmer, but it definately shows up now that temps are cool (not sure if this has anything to do with it or not). I am running the spartan on 75hp tune for the winter, dpf off. The power also seems down?
Anyone have, any ideas?? THanks!