07-13-2013, 10:55 PM
Join Date: Dec 2010
Location: Knoxville, TN
Total Cats: 2
clarification of MS1 Extra Tuning Manual
the manual says....
Setting the PWM Criteria
To tune the PWM [pulse width modulation] values for your engine, you need to know what kind of injectors you have: low impedance or high impedance.
If you are running high-impedance injectors (greater than 10 Ohms), then set the:
PWM Time Threshold to 25.4 msec, and the
PWM Current Limit (%) to 100%.
In essence you are disabling the PWM mode. This allows full voltage to the injectors throughout the pulse widths.
I am using Delphi 525 EV6 injectors, these measure 12 ohms; therefore they are high impedance injectors.
If I set my PWM current limit to 100% and my PWM time threshold to 25.4 msec then I effectively disable PWM mode and cannot use it for idle control?
Is this correct, I cannot use PWM for idle control when using high impedence injectors?