This is my setup. 1993 cummins 120000 miles tight motor has never towed anything heavier than a 1000 lb boat. stock 18cm turbo, pump 1 1/2 in on fuel delivery screw, 1 1/2 in on smoke, 1/4 down on starwheel, diaphram clocked to most fuel flow. power wagon injectors. stock downpipe w/ 24 inch straight downpipe. seat of the pants feels great. What is your best guess on hp and torque numbers? Is anyone else running a similar setup ? thanks copterdoc