Past 3 days i was getting a miss at idle every 15 secs, been running spartan's 250 tune for the past 2 weeks (300 miles). I reloaded the tune today and the miss went away, i really didn't expext reloading the tune to make a difference but from what i can tell it did.
While i was messing with the truck i pulled the codes just to see if anything was going on and P1635 Tire/Axle Out Of Acceptable Range show up, truck has stock everything but the tuner and doc/dpf delete. With only 2300 miles on it i hope this isn't a sign of things to come