Duder
Watch it man, there's a beverage here!
- Joined
- Dec 9, 2009
- Location
- Torrance, CA USA
That's actually a really good idea, I will try the spring on the WGA, currently it is the 13c unit, I pulled all the rods and picked the stiffest, super scientific.
If you have a Mityvac that can both blow and suck, and a dial indicator, you can get a good estimate of the boost pressure at which your actuator starts to open. Put the dial indicator shaft in line with the actuator rod, at the tip, and zero it. Then plumb your Mityvac (or other controllable pressure source w/ gauge) into the port and start pumping it up. When the dial indicator reaches about 0.040" (1.00mm), read the pressure on the gauge, and that's going to be pretty close to the effective setpoint...if you're running straight into the actuator without an MBC or EBC of course.
Edit: bypass the MBC when you do this. Probably worth clarifying.