To me, doing pulls from telephone pole to telephone pole, taking videos of mirrors, seat of the pants power, and cruise EGT's are not valid test methods. Way to subjective.
To me it sounds like the reduced timing with the higher pop pressure injectors spooled the turbo better. Sounds like a flaw in the tune. Timing changes during spool on the VP44 trucks does have it's advantages. That's why they are one of the few generations that actually use the transient timing maps in the ECM.
Testing ideas on these trucks is fun and can be very time consuming. Just make sure that sure that you are using valid data to come to conclusions and not coming up with data to support conclusions you have already made.
Paul
Just make sure that you are using valid data to come to conclusions and not coming up with data to support conclusions you have already made.
I believe that me78569 is thinking about repop on the first set for another set of results...If you wanted to make this somewhat consistent, you should be using the same injector when increasing the opening pressure. This is how things are compared on an engine dyno, you make one alteration at a time with the same component.
Repeat.
idle haze in a daily driver is a poor choice from the gate....that doesn't equate to a correction in pop pressure
to be clear I was talking about offidle haze / smoke, not idle haze. the 900-1300 rpm area where the engine is effectively NA.
Idle haze seems to happen regardless of the injector builder, at least the videos I have seen. My idle haze is nominal on both the stock bar and the 330 bar 7 x .012's. Same goes for my old 7 x .009's.
My 7x.010 had a idle haze.... 7c.010 on a vp44 isn't a poor choice to dd... With a small turbo upgrade and/or quadzilla they are nearly equally as safe as stock but with more power abs better mileage... And the higher pop is showing to rid some/most haze and smoke