On more than one occasion I've had issues with my truck under heavy acceleration. Yesterday I stepped on it to pass someone while I was driving. The truck spooled up the turbo and started to take off. While doing that, it just bucked (twice) and then the power was gone. Initially I thought maybe it was my defuel levels but then I looked at the max EGT and it was only 1035, and I had my turbo refuel off. All the temps were in the normal range too.
I've noticed lately that some of my exhaust smoke has turned from pure black to a light black/grey. I haven't puked any coolant to my knowledge and I changed my oil last week.
I'm running the HD300/HOT tune on an 08 6.4l with 58k miles. Deleted and a CAI. Any advice on what this could be??