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Message: [QUOTE="Charles, post: 1295389, member: 103"] One last time and I promise I will not waste any more bandwidth. You seem incapable of understanding that reducing pulsewidth on a larger nozzle does NOT produce the SAME power! A larger nozzle can make MORE power run COOLER and have LESS smoke while using NO MORE pump! This is because it injects the SAME amount of fuel much QUICKER... Fuel quantity determines your pump demand and subsequently your rail sustained. However, injection DURATION determines the efficiency of that burn, all else constant. A larger nozzle allows you to run the SAME quantity, with better injection window timing. And by dumping the excess and DETRIMENTAL pulsewidth on the end, you would simultaneously stop running his single pump into the ground, regain a proper rail to pw ratio possibly make even more power than he's making now if rail's dropping horribly, or worse case only lose a bit of power compared to where he's at now while bringing EGT right in check, costing nothing aside from some time on a keyboard and requiring no work done to the truck. In fact, truth-be-told, he would probably be better off with a small charger setup if he had BIGGER nozzles than he has now!!! He could shorten the injection window even more and give the fuel even more time in the hole to burn with the available air! This holds true to the point where the larger holes eventually produce such large droplets that efficiency starts to drop again for that reason, or when in the process of making the holes larger, the efficiency of the hole to atomize fuel is killed, like with EH where the hole is smoothed out too much and you get to much laminar flow instead of the turbulent flow needed to bust the fuel up. If a larger nozzle can make the same power as a smaller one while smoking less, using less pump and running lower EGT how do you figure that would be "treading water"? Lowering EGT, raising rail pressure and controlling smoke [i]are[/i] important things. Millions of dollars have been spent toward those goals alone. But most importantly, your continued response of just "adding air" totally ignores the fact that he hasn't mentioned the truck being low on power, unless I missed it. He says it's way too hot, especially at part throttle. That is classic tuning. If he said the chargers were really doggy that would be different, but he said they were coming up fine, it's just hot all the time. Classic excess pw. Secondly, "adding more air" costs money. And time for the hood to be up with things being physically changed out on the engine. Lastly..... if the problem really is a part-throttle, then a bigger charger setup might actually worsen the issue if they don't come up in the mid-range as well, and it never fixes a mismatch between desired rail vs pw for a given pedal position! Truck would still be smokey and doggy with rail trying to chase the pw all the time. It also would do nothing to fix the extra resources being drained from the injection pump due to the injectors being held open too long! Money, money, money and never actually hit the real issue, just keep chasing it with hardware. [/QUOTE]