and was some talk here about using 25 vct parts, I think elite racing/the dan was doing something if you want to read through
http://www.skylinesaustralia.com/forums/topic/251820-got-over-400kw-atw/page-51
As people say the mixing is a hassle, you should be able to make around 300ish on e85 with those injectors which is about where the turbo should be, maybe a reg just in case
people always expect problems to be ironed out with the tune, not saying that happened here but there's no info on the 'restriction', what was happening?
could be from breathing hard, could try blocking the pcv but would maybe need a breather on the catch can, that plenum may not be helping with engine lifespan