how do you jet / drill out jets to bring spike boost closer to held boost pressure and viservurser

 

In Norway we through away th amal-valve, and use an ordinary bleedvalve instead.

 

you need to drill out the little collets the one on the amal valve to 3mm and the one on the airbox to 5mm,to remove the collets just screw in a self tapper screw and pull! This was done to my cos as recomended buy ahmed bajyoo car peaks and holds 17 psi perfectly!