Unable to run pass through with PWM and MAC solenoid

[dogmoo]

With the mac solenoid hooked up and running at any tested (so far) PWM/hz combo I can't get the gate to open under any setting. I have checked my basics. The solenoid is new. It operates at different frequency ranges with different test out put settings. and I have it plummed correctly (1 from pressure source 2 to turbo 3 vented). I can blow on 1 and when testing it passes through pretty unabated.

There is one anomaly I cant explain that doesn't jive with the rest of the internet. it seems my testing is reversed from what the "internet says" it should be. From my understanding my max boost setting should be at 100 percent duty and my min should be at 0 or 1 k. however when I test through the out puts I have the most flow at 100 percent and the least at 1 percent. Is the test out put reversed from the vehicle?

Also the other thing is that I don't always get exactly the same PWM as commanded. I will sometimes get 99 when commanding 95 or something to that effect.

all of my testing has been at fixed duty cycle.

also lets assume for now that HZ is not the problem. I have tested at a range of different HZ's from 25 to 60.

Thanks guys

[Spunkster]

Do you have it set as normally open or normally closed?

[dogmoo]

Normally closed.

[dogmoo]

I'm curious. Why is that even a definable option in smanager ? What difference does it make to the software? If duty cycle is a mapped by the user to a given boost amount, then why would it matter if the ecu knew what state the solenoid was in at rest. Or where maximum boost was.

[Spunkster]

Because normally open and normally closed operate inversely.

[dogmoo]

Yes, I understand open and close are inverse of each other. but what does that have to do with the pulse width being sent from the ecu? 80 percent is either 80 percent open or close. That arrangement is defined within the parameters of the pressure vs. duty cycle map. Why does the selectoion matter?

Do you have any ideas as to why I wouldn't be able to run spring pressure?

[Spunkster]

Are you seeing any duty cycle form the boost control in datalogs?

[dogmoo]

Yes. It's out putting commanded PWM. But it's switched from what it is supposed to be.

[Spunkster]

Then something is not plumbed correctly if you are not getting any changes in boost level.

[dogmoo]

i can remove the controller and put in a splice and it runs wastegate spring.