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I have had following problem ever since I hooked up my Boost Commander. With key on and engine off if I put the adjustment knob on the lowest setting the solenoid does not vent at all. I have to turn it up to the second dot to even get the solenoid to vent. The noise is rather faint. Boost will come up to 15lbs but sloowly. If I turn the adjustment knob just an 1/8 of an inch, I mean barely, the solenoid is ALOT louder when venting. The result of this is very quick spool up BUT the boost trys to shoot past 20lbs. So just a turn of an 1/8 of an inch on the adjustment knob means like an increase of over 7 or 8lbs of boost. I don't really know where it will stop because I have to let out of it. I've tried two different solenoids, two different y-hoses. I am only running ONE solenoid also. I do have a heavy-duty wastegate with a 15lb spring. Could this be the problem? Do I need to have my chip modified in order to run the heavy-duty wastegate and Boost Commander? The only thing I touched when I hooked it up is the turn on point. I have it as sensitive as it will go. Other than that the switches are the same as when I got it out of the box. Thanks.
 

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"With key on and engine off if I put the adjustment knob on the lowest setting the solenoid does not vent at all. I have to turn it up to the second dot to even get the solenoid to vent. The noise is rather faint."

Mine does this also. Found that out getting ready for dyno. day.

Can't help you with the rest of your problem.

I would say with no venting BSTC all the way off you will get spring pressure boost, then when you crack it open it bleeds up a lot to add the 7 lbs. boost if it still operates higher 6 more pounds of boost from there with the knob all the way up you should be able to regulate your boost by setting base with the knob at the second dot and using your adjustable wastegate.

Hope that made some sense, still working on the first cup of coffee.
 

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I have to turn mine between the 2nd and 3rd dot to hear the solenoid and see the bstc activate.
 

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