I am also using the acis manifold but the problem i'm have is that when underboost the pressure shuts it again (there meant to be under vaccumm) to the around my problem i'm using a wastegate actuator instead :) i hope this helps.
It's not that hard and it gives ya a heap of turbo setup room. Some people chop and change mounts but i just use a couple of L brackets
from the underside of the bumper and a fan mounting kit.
Hi from New Zealand. I've been an ep91 owner for about 5 years now and it has undergone a fair amount of mods ... it's always changing so i thought i would join the community.