The lowest that I have seen my 60's at idle is a pulse of 1.6

Changes to the offset table make a big difference, I dont know what your current offset values are but the ones that I had for my 44's were MUCH MUCH lower then what is needed for the 60's

 

is this the table your talking about?

 

so if I'm understanding this correctly, the above table will delay the injectors operating based on supplied voltage. Is this how we cheat with the larger injectors in addition to the longer open times required to run them?

 

what does RAF stand for?

 

It doesn't delay the opening, that table defines how long it takes for the injector to open at a given manvac and battery voltage.

Running Air Flow.

 

Ahh, so the slower it opens, it effectively lowers the overall flow for that event?

 

Think of it this way.
PCM calculates the air mass per cylinder. Divides that by the commanded Air/Fuel ratio to define the fuel mass that's needed. Then looks up against the Injector Flow rate at that particular manvac to determine how long the injector needs to flow fuel. This table determines how much the PCM needs to add to the pulsewidth (among other tables) to open the injector for the correct amount of time.

 

in simple terms; a lower number = less fuel, higher number = more fuel?

 

Yes, but it's more appropriate to think of this as dead time on the injector. This is the amount of time it takes for the injector to open once the PCM has told it to open. The bigger the injector, typically, the longer it takes to open.

 

is this what we use to help keep idle AFR stoich? if so, it seems more dead time is desireable?