hi all i need some advise on how to mod my amal valve?

many thanks to all

 

im just doing the same thing been told to slightly increse the hole size on my sapph amal valve to increase boost this will allow more air to blled off. said to do the one with R above it the return to the air box

 

Remove the white plastic restrictor from the R outlet completely.
That's assuming you have a valve with 2 outlets and 1 inlet.

 

As said screw into hole then pull out the plastic plug/bung.
tabetha