My Megasquirt adventures over the years
There's some other fun stuff you can do in the fuel menus, but most of it is beyond the scope of my build:
Injector timing is something I could play with one of these days, and I have tried a very small amount, but without something like a dyno where I can really sit and test values in controlled conditions, I don't think this is something I'm going to be able to tune effectively. What it does is time when the injector starts (or finishes, depends on your settings) injecting fuel relative to the intake valve opening. The general theory they use by having 360 degrees in all the cells is that you want to spray fuel on the back of a hot intake valve before it opens to allow for best vaporization. You could get clever and try to inject when the valve is open to spray into the cylinder when the airflow is higher, but head design and injector angles and spray patterns can all affect that. Also, as you get to higher rpm you have less time to inject and may not have time to finish before the valve opens, so it likely only as useful at lower rpms.
Staged injection goes back to the idea of running two sets of injectors. Typically you'd probably switch over at an rpm set point, though there might be other settings you could use. I've never messed with it, so don't know enough to be useful.
Fuel sensor settings I have debated playing with one day just for the fun of it. This is where you can set up a flex fuel sensor (E85) or temp sensor. I've debated putting a sensor in my car just for the novelty of being able to run E85 if I wanted, but I might be injector limited. Neat stuff though and maybe a "down the road" project if I'm really bored.
There's some other fun stuff you can do in the fuel menus, but most of it is beyond the scope of my build:
Injector timing is something I could play with one of these days, and I have tried a very small amount, but without something like a dyno where I can really sit and test values in controlled conditions, I don't think this is something I'm going to be able to tune effectively. What it does is time when the injector starts (or finishes, depends on your settings) injecting fuel relative to the intake valve opening. The general theory they use by having 360 degrees in all the cells is that you want to spray fuel on the back of a hot intake valve before it opens to allow for best vaporization. You could get clever and try to inject when the valve is open to spray into the cylinder when the airflow is higher, but head design and injector angles and spray patterns can all affect that. Also, as you get to higher rpm you have less time to inject and may not have time to finish before the valve opens, so it likely only as useful at lower rpms.
Staged injection goes back to the idea of running two sets of injectors. Typically you'd probably switch over at an rpm set point, though there might be other settings you could use. I've never messed with it, so don't know enough to be useful.
Fuel sensor settings I have debated playing with one day just for the fun of it. This is where you can set up a flex fuel sensor (E85) or temp sensor. I've debated putting a sensor in my car just for the novelty of being able to run E85 if I wanted, but I might be injector limited. Neat stuff though and maybe a "down the road" project if I'm really bored.