have na to turbo (s4 gxl 2+2)
na em harness
car runs/revs but wont idle
still havnt driven it

tps? or bac? from what ive read but dont know

boost gauge(aftermarket)
reads vaccum (20/25) when reving
until like 6k then starts to boost
boost gauge tied to boost pressure sensor vaccum line
and it in a vaccum hole on back of upper intake manifold near bac
bought engine WITHOUT

air control valve - blockd off
egr valve - blockd off
and one more plate on manifold blockd off
not sure what it is but there is nothing on manifold
used na harness
metered everywire(continuity)
so i know its going to right place for
the fsm pin out of ecu

just really confused ne help?

 

was just reading and i dont have a intake gasket on my upper intake manifold where it splits to access the engine wire harness. this would cause a HUGE vaccum leak wouldnt it and could be my problem? does it need sealant too or just put on there and tightend?