PWM with Nitrous

[bmoon]

2014-03-27_15.29.58.msq

I am currently using MS3 Pro and a stimulator. I am learning tuner studio and bread boarding some additional circuits. One of these is nitrous solenoid control with PWM using a mosfet driver circuit (solid state relay). This circuit drives the solenoid ON when the PWM3 Goes from high to low (using a external pull up). With an oscilloscope connected to the PWM3 and nitrous in tuner studio set up for progressive rpm based. RPM curve starts at 3000 goes to 7000. Duty cycle 50% at 3000 thru (linear curve)100% at 7000 . With 12v in on and adjusting RPM's with Stimulator Nitrous turns on at 3000 and stays on until 7000 as expected. however the duty cycle does not change. it stays the same between 3000 and 7000. This is the same thing as on/off. I have checked the PWM3 by itself without my circuit and the pulse width does not change either.

[Matt Cramer]

Do you have a data log of this you can post?

[bmoon]

No. I do not. been using the Stimulator. All input signals seem to be functioning correct. Is there something you might be thinking.

[jsmcortina]

Take a datalog anyway.

James

[bmoon]

Take a datalog anyway.
Currently out of town. will take a data log and reply soon. Thanks for the assistance.
James