So I pretty much have my aquamist hsf-3 completely installed, I'm now at the wiring point of the fail safe method. I don't fully understand the tephra method, So i'm going to be using the boost cut method, but if i'm using a manual boost controller is this even possible since it has to have signal from the BCS? I imagine i'm going to have to switch back to stock boost with the solenoid, unless there is another way to do this.

 

You can use a MAC Valve. Lots of info in the water/meth injection section of the forum and at www.waterinjection.info

www.howertonengineering.com has a lot of good info to.

 

The mac valve like previously suggested is the best way, I have the same kit and use the mac valve with the safety feature to cut boost back to wastegate pressure in case something should fail.