second is to line up the pipe that goes from the turbo to the intercooler so you know wear to cut the hole
you cut the hole just under wear the airbox goes
when you cut the hole make it at least 20mm bigger than the size of the pipe
when you cut the hole get some hose slice it in half and place over the cut edge so it does not cut into the hose
then you have to conect the intercooler to the piping and tighten the hose clamps. Then it is just a matter of lining up the holes at the top of the intercooler and drilling holes through the engine bay wear the airbox goes and putting some screws throgh to hold it in place
i made this post to help the people that have an avo stage 1 intercooler and do not know how to fit it.
like me when i first got mine i did not know how to fit one and tried serching but with no luck
if you require any more info please don't hesitate to ask