Ebay FMIC pipework without N75 Vac hose outlet

Had a phone call from one of mates today, his brother has a 1.8T golf with a ebay special FMIC and pipework,

The pipework that runs over TIP and down side of battery to N/S of bumper, The turbo pipe comes out of the turbo and upto a 90 degree bend and has a 25mm outlet for recirculation valve but no 4mm outlet for the N75 pressure hose,

At the moment it has some sort of copper union at side of recirculation valve that runs to N75 but looks a mess and means the recirculation valve won't fit in TIP and is just venting to air instead of back into intake,

I was going to plumb it into the inlet manifold but this will go from positive to negative pressure when the throttle is close so am guessing this isn't a viable option and i will have to find someway of putting a 4mm nipple into intercooler pipework???