Boost controller wanted

Does anyone have one of those mechanical boost controllers for setting the boost for sale or where one could get one in the JHB area.

i have one lying around my garage.

its used, but in good condition.

yours for R100-00.

Hi, Confirm its the type that has the knob you screw in or out to adjust the boost, if it is then where are you and when can we meet. Thanks a lot.