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Rumble sounds like miss fire
Vehicle: 08, F350 SD 4x4 6.4l
Mods: K&N 57 series intake/filter
Symptom: Engine feels and sounds like it looses fuel between shifts during semi hard accelleration. It has also done this a couple of times when it's not shifting.
When did it start: I've only had the truck for a month, after 3 weeks I changed the intake to the K&N. This is when I started noticing it. I'm hesitant to blame the K&N because the stock filter system was probably masking it. This is a California truck and the K&N is the 57 series that is CARB approved.
Santa Rosa, Ca
08' F350 Super Duty 4x4 OffRoad. 6.4l, Fabtech 6" lift, Procomp 20" wheels/Toyo 37's, K&N Intake. 9" total over stock lift.