Here you go mate..

http://gizzmousa.com/gizzmo-manual.html

Make sure you set the duty cycle up before changing the Gain.. When I upped the gain more than 7 on mine the boost tended to creep up a bit over time. When you turn on the ignition it flashes up it's 'target boost' always keep an eye on this. Like I say though, as long as you keep the gain at the right level it shouldn't go up.

HTH

great little controller