Hi sir Dieseldude, I have a 4m40 3 door Pajero and my problem before was my fuel consumption. So What I did was change the zexel noozles and had it pressure test, after that sir what i noticed is that my fuel consumption stayed the same when I rev up to 3k or above RPM experience black smoke and when I drive it full pedal it's hard to push beyond 80kms/hr. By the way sir I just changed new air filters. Are you saying that there was no improvement after replacing the nozzles?

Any advice sir? I'm thinking to just having it calibrated. Will it solve the problem? Thanks. Check EGR before considering calibration.