Standalone Dry calculations

[202mphbusa]

So I have a Spread sheet off the Megasquirt forum for Dry pulse width calculations
I can post it but this is the jist of it
I do not get some thing PW lower at higher RPM? Cyl filling?
Calculations seem right ? any brainiacs out there

 

[202mphbusa]

and no my injectors are not 1910cc that is combined primay and staged and I would run nitrous enriching both banks

 

[Gixx1300R]

Too many variables, those calculations are (best guess)

 

[202mphbusa]

Too many variables, those calculations are (best guess)

Best guess is still better than me pulling numbers out of my ass
I could add 5-10%and set my pressure pro to start with lower pressure

 

[Gixx1300R]

Best guess is still better than me pulling numbers out of my ass
I could add 5-10%and set my pressure pro to start with lower pressure

Most of the numbers are already established when using nitrous. Best guess is never the best route to go. Setup a base line and start with a small shot and work your way up from there. Tailor your setup to your bike

 

[sportbikeryder]

Im not really sure what you are asking with this:

I do not get some thing PW lower at higher RPM? Cyl filling?
But the pulsewidth doesn't directly relate to the total fuel delivered, rather the duty cycle is more related to the total fuel. At higher RPM, after your tq starts dropping off, there is less volumetric efficiency of the engine (which is why the tq drops off).

At high rpm, there is less time per cycle, therefore, a lower pulsewidth can equate to the same (or even more) total duty cycle.
Think of it at nearly 100% duty cycle. That would be a pulsewidth almost exactly equal to the cycle time. As rpm increases, the cycle time is reduced, and therefore the "100% duty" pulsewidth is reduced.
The amount of fuel per cycle is reduced, but the overall fuel delivered per unit time could be the same (or more, or less).