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Message: [QUOTE="Charles, post: 1295049, member: 103"] At higher than stock power levels bigger (faster) nozzles will always run cooler power per power until you get ridiculously large. But if you go to a larger nozzle and don't cut the injection duration back appropriately, then you're not [i]at[/i] the same power, you're at much more power. Don't ever swap to a smaller nozzle to cool an engine off. Drop the pulsewidth. Injection pressure will rise, the time the injector is spent on and spraying will drop and the EGT will drop. This is why every diesel manufacturer on the planet goes to a larger nozzle when similar engines have higher power ratings. They need to keep the injection window short. All this guys needs to do is cut the pw back. If you took a bone stock truck, installed the biggest set of injectors you could find but tuned the truck to make EXACTLY the same power as it did with stock injectors in it the truck would run [i]cooler[/i] with the larger injectors at full power. Down at lower power it would run hotter if the larger nozzles didn't atomize as well. [/QUOTE]

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