Hi, have a question regarding boost control via an electronic controller and wastegate springs.

I have a PE TT kit that is using the Blitz i colour boost controller.

I am able to set boost at 0.3bar or 0.4bar and it is able to maintain it at that level.

But when I turn it off and effectively run on the wastegate spring, boost reaches 0.55bar.

How is this possible? I thought that the boost controller can only control boost from the wastegate spring threshold upwards? Thanks.

 

It depends on the controller, I'm not sure about the specs on yours, but I think some can pull a wastegate open or hold it shut. Maybe you have one that can do this.

 

Never heard of a boost controller that can pull a wastegate open.

I know that my boost controlled has dual solenoids, but I think its so that it can better control the closing and opening of the w/g and is not able to open it before the w/g spring pressure.

 

I've never seen one first hand, I've just heard about them. They may not exist.