grainger valve

[91RedSpiritRT]

looking to add one of these to my R/T to control boost. not sure exactly how they work or how to intall them. any helpful hints would be great!

[Vigo]

basically a grainger valve is just a ball held against a seat by a spring. whenever pressure on the ball overcomes the force of the spring, the ball raises from the seat and allows air pressure to 'bleed' past it until it lowers enough that the spring overcomes it and seats the ball again.

anyway there are a few grainger valve how-to's that guys here can link you to, but i dont know any of them offhand.