

Refit the boost pipe by 1st cleaning around the pipes it connects to. Now connect the tube and fit a cable tie onto it so it does not come lose or leak: Use an "o" ring to make sure it is air tight. I used a plastic number plate bolt as the connection will be plastic on plastic. Now it is very important to wash out all pieces of plastic and dirt inside the boost pipe. Do not over tighten the connector or it will damage the thread you have just created. Use a long nose plier to tighten the connector on to the boost pipe and to create a thread into the plastic.

Fit the connector from inside the boost pipe: With the boost pipe removed wash out any oil to make the job easier and cleaner. You will need to remove the boost pipe for this by removing the engine cover and unclipping the steel clasps at each end of the boost pipe. You can always fill gently to make the valve fit tight and to create its own thread: Make sure you leave a nice path for the pipe to run to the boost guage. Drill where the connector will not rub against either the engine cover or the water botle. Practice drilling on an old pipe 1st using a drill slightly smaller than needed. Prepare the valve by removing the inner valve by cutting the copper part: I used a cheap but logically sensible bicycle tube valve as the connection: I am sure the boost pipe is expensive and there is a lot a pressure there so there is no room for error and one must ensure an air tight and strong connection.
AUDI A4 B6 BEST BOOST GAUGE HOW TO
The most important area point is how to connect the pipe from the boost sensor to the boost pipe. I have highlighted some points to be careful of, but the list is not comprehensive. Firstly, this is a DIY installation and i am not a qualified mechanic so every thing you do is at your own risk.
