So Im pretty new to the 4th gen world. I owned a 12 valve for a long time and decided to upgrade since the truck was falling apart and i tow a whole lot all over the place. Truck is a 2013 2500, automatic, fully deleted with efi by ryan and 5 position switch and 5" turbo back. Truck stays on postition 1 at all times because its plenty strong enough, plus the trans is stock. I cranked my truck the other morning and had the exhaust brake on as i usually do. I keep it on auto at all times. After about a minute it did its normal thing, exhaust brake closed off and it began to do the whole fast warm up deal. Went back inside and looked out the window and it was dumping a solid 5 inch cloud of black smoke. I went outside to turn the brake off and it didnt change nor did i have any throttle response. Just a fuel knock when pressing the accelerator. Shut the truck off and cranked back and it still did the same thing. So i kept feathering the throttle until it came back and acted normal. Since then it has happened 2 more times. Im not ruling out turbo vanes hanging but im not 100% sure thats the problem either as the truck runs great, makes great power, boost, exhaust brake works flawlessly when towing and when not towing. Also once it does its little episode when cold it doesnt act up again until the truck is cooled down and cranked again cold. Has anyone run into this issue before? Not crazy about the VGT. I will eventually end up doing a fixed turbo swap and BD exhaust brake probably after the new year. Any info is appreciated! Also, there is no CEL when this is happeneing and no stored codes.
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