Slight miss, and sluggish in overdrive
I have a 2004 f250 6.0 has EGR delete and oil cooler replaced maybe 6,000miles ago. I have always thought that my truck was louder than most other 6.0 as far as engine noise. lately i have noticed a slight miss at idle, as well as the engine has dies a couple times when i would let off the gas to turn or what not, but has always started right back up like nothing had happen. The truck is also very sluggish once it goes into overdrive, and seems like it is a little down on power i do have a sct with custom tunes from innovative, but i have returned it to stock since i have noticed the problems, i am also running rotella t5 10w30. thanks for any help .