From what I understand the % pulse width is what the ECM is commanding divided by the maximum possible time the injector can fire from the time the intake valve opens till the next time the same valve opens again (2 crank revolutions)
The time, in milliseconds, from intake valve opening to intake valve opening is
60,000 x 2/rpm.
60,000 x 2 = 120,000
120,000 /RPM
If we take your 6000 RPM shift point and plug it into the equation we get:
120,000/ 6000 = 20ms or 100% duty cycle
Your DS reading of 19.70/20 = 98% duty cycle
Looks like you are almost maxed out. I imagine you could run slightly over 100% duty cycle if you really want to squeeze a bit more out of them… then again it’s your car!
Paul
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1972 Toyota Celica with a 87 TR drive train.