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Hello - I am working with an automotive manufacturer and would like to learn more about diesel engines. What is the best modification you have made to improve your diesel engine? Why?
Filtration- injector life.
Exhaust- lower egt's
intake- cooler air, and more of it.
I went overboard though...intake, exhaust, injectors, cam, fuel preporator, programmer, giant turbo. love 'em all.