How Fuel Pressure affects Injector Flow Rate - Tuned By Shane T 

Awesome to hear thanks for watching

Yep happens often. Becomes clear when you see the data.

Glad you enjoyed it

Good deal thanks for checking it out

🙏

Awesome, always easier to recognize when you have had real world experience with the symptom to draw from.

@@TunedbyShaneT is there a way to calculate injector dead times when you don’t have any info on the injector it self?

You can get close by using the old fashioned way. Nearly all injectors have become linear by 4mS unless we are talking really low voltage (less than maybe 10v) So you can run the engine at the right load and rpm to attain 4mS and keep it there. Observe the mixture, rpm and load. Change the battery voltage (disconnect charger or take alternator connector off) Go back to the same rpm and load points, adjust pulsewidth to attain the same mixture. Observe the PW. Subtract the PW from the first test. The difference is roughly the voltage offset.

@@TunedbyShaneT thank you so much for the input I will look into that method to calculate the offset times thank you so much for the advice

The short story is, it took so long (and is still ongoing) and so much $ and effort to get it to the level it is today, I’m not willing to share that with anyone.

Yes that is EFI 101 stuff.

Lol funny about the Chevelle. I would consider comparing the two. Its hard to do something that covers every application however.

@@TunedbyShaneT all good man! We will be watching, regardless! From Australia🇦🇺

They were M800

@@TunedbyShaneT amazing what you can do with an m800 some 20 years after first release.

Yeah when the pulse is very short, there is not time enough to build the power you need in the winding to get the injector to open all the way.

I think you have it backward or at least the terms are backward. The opening time is the part we adjust when tuning in the engine management system. The fuel pressure is adjusted to a specific pressure and maintained. The opening time is dictated by the pressure.

Does it ever get to where you are opening the injector ahead of the intake valve ?

Depending on the system layout, strategy and more specifically if it is Sequential (Fires one injector per cylinder in firing order) and synchronous (has a unique trigger event referenced to a specific point in the cycle) then the timing relative to the reference point can be adjusted anywhere in the cycle. Which is a long way of saying yes.

Thanks for helping me understand !

No doubt that it true.

It's called passion man. Even so called, fit people can run short of breath from time to time.