Over the past few months I have noticed one or two of my injectors are getting pretty loud. I realize these are not quiet motors but it does not seem normal. It does not go away as the motor gets warm. I did a buzz test and it seemed normal. Fuel pressure is 60 at idle and wot it drops to 50. It has a brand new bosch fuel pump as well as a driven diesel hutch mod kit and the 65psi fuel spring with the FPR rebuild. My second issue is low ICP. Using torque pro on a 3/4 throttle pull it will be around 2800-3000psi. WOT it will hold at 1500-1800 at a 65% duty cycle on the PHP 140 tune. The truck only has 150k on it. Last winter my fuel gelled twice while I was driving and could have possibly did some damage. Is it possible for a bad injector to cause low ICP/ fuel pressure? I have a hard time believing the HPOP is bad already.