I finally broke down and took my truck to a local dealer a couple days ago, Davis-Moore in Wichita, for what I feared was a failing VP-44. P0216 code rough idle and bluish smoke in the mornings. I have never been to this dealer before and was fully prepared (I am my own warranty station) to buy my own VP-44 and replace it myself because of the mods to the truck , FASS & EZ, plus I had bought the truck used in Texas and didn't think I would be entitled to any warranty. The service manager had me explain the problems to the diesel tech and he immediately said it could be the lift pump. I promptly pointed out that I was running a FASS and showed him what it was and that I had a constant 15 psi when the truck was running. Turns out the VP-44 was bad and to my suprise it would be replaced under warranty no questions asked. I thought for sure the warranty would be void, but the truck has 84,000 miles on it and was still under the 100,000 mile warranty on the engine. Excellent people to deal with and I will go back in the future.