Originally Posted by
B00STJUNKY
I don't think I've ever seen anyone mention injector duty cycle when tuning a diesel application. This might be due to the fact that if you were to try tuning based off of the traditional gasoline application of running to a max duty cycle of say 85% or 90%, you'd have blown your diesel engine long before getting there.
Your window for the injection event is much, MUCH shorter on a diesel than it is on a gasoline engine application. Typically, you won't see much beyond 3.2 ms (3,200 uSec) of injector pulsewidth on a diesel (and that's considered very heavy fueling) whereas you could see 30+ ms (30,000+ uSec) on injector pulse on a gas app.
So, I would suggest at least brushing up on the theory of diesel engine dynamics before attempting to tune one.