Ok so this is a 1 owner truck recently with a all new fuel system OEM new fuel pump, new sender with screens, IPR, HPOP, new Garret turbo with WW2, FPR 4 in exhaust, HYDRA chip PHP and recently flashed at the dealer from XLE4 to new strategy but I believe the chip over rides that. Truck has 225,000 miles on it. The problem I'm experiencing is the truck seems slow to build up boost and in 1st and 2nd gear it has high rpm and won't shift until I let off the gas using the chip. Fluid looks excellent I've changed it about 3 times in the last year. Torque converter also does not seem to have a lot of bite really also. Another thing is when it warms up and you use it hard it has a weird knock under the truck, if you crank the wheel all the way left or right in drive it lugs and knocks harder almost stalling the motor same with reverse. In park the knock is almost knock there but as soon as you go to drive or reverse it knocks hard and almost wants to stall, anyone know what could cause this?