Ecumaster forum

Im having issues with boost control on my car, currently i have the WHP solenoid plumbed as the diagram attached. How ever connected like this the car just builds infinite boost, is there a different plumbing scheme for the solenoids? i thought they was all the same.

that should work, double check your plumbing by blowing through the ports you need to use the two ports that are connected with power off. if all is correct try again with the power to the solenoid disconnected you should only build boost to spring pressure

I recall buying my boost solenoid from Volvo umhlanga which was cheaper at the time...not sure what this costs now days.