I just had a set of remaned 50hp injectors installed, now the truck shudders under power. It idles fine, starts up with no problem. ???








2006 megacab 2wd dually, 4 speed auto, AFE stage 2 cold air intake, AFE intake plenum, 50hp remaned Bosch sticks, Magnaflow 5" turbo back exhaust, H and S xrt pro programmer

 

check drive shaft for any wobble.then u joints and carrier barring.If all is good you got bad injectors.

 

I'd suspect that shudder your feeling is from the transmission. The extra 50hp may be making your torque converter clutch shudder and slip.