You could probably use an idle valve like mine and control it via PWM from the Megasquirt.
It's got 3/4" connections and you wouldn't need to leak much to drop the boost.
The other thing you could try is just to bleed off the boost to the bypass valve. That would allow boost to push it open.
Doing it that way doesn't require any other hardware, so it could be used for both bypass and boost control.
Yup I like the bleeding off boost to the bypass valve idea. I actually have a manual boost controller from an old skyline I had here that might do that job perfectly. Will research it more. A novi2000 pushes a lot of cfm, I don't know if an idle valve will be able to bleed enough in the higher rpms
You would be surprised how little you'd have to bleed off to lower the boost.
But yeah I still think the bypass valve is the best idea if you can control it well enough because you don't have to modify any extra pipework etc.
If the boost controller you have uses PWM to drive the solenoid, you might be able to drive the solenoid directly from the ECU.
I was thinking about it, and I don't think a bypass valve will work easily if it's also being used as a bypass valve. If you bleed off boost to the bypass, it will do it throughout the entire rev range, and it will do it at a fixed rate. Ie if I set it to 2psi it will bleed of 2psi from the get go to redline. I can't have it closed until it reaches a certain psi, and then open, like a wastegate.
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