Got around 4 electrical wires and 2 boost vacuums running through the bulkhead... My modified wire coat hanger 'tool' is not as good as it used to be cos the opening is JAM PACKED haha!!!!
non return valve? not heard of that before on a boost hose - i thought normally you get a little useless air filter in the kit with a controller though.... surely a non return valve could be a bit dodgy mate, any boost pressure that goes to the sensor before coming off boost would be trapped in the sensor hose wouldnt it? could play with the readings and solenoid possibly, maybe cause boosting problems? i'm a bit confused on that one......
Toby - not sure what you mean about this filter or NRV?? I've never seen this with my Gizzmo kit lol... just solenoid, control/display unit plus vacuum pipes are all you should need