tracking the boost leak?

atp turbo greddy bov flange..

its a two peice
one welds on

then the acutal flange threads on to the welded peice

i was wondering if it was spose to be weleded after threaded in place?


also
using a 7.25 lb spring
and will only boost 4lbs

all vacs are tight
tbolts are tight

vac is routed like this

wg lower port to compessor nipple
bov to T into fpr solinoid. which goes to im directly
boost guage T into FPR and goes directly to IM

also have a dump that goes next to the dp facing the floor
used the flexable piping thing at autzone... i think i tightend the bolts and the U bracket down..but if that leaks will it cuase me to boost only 4?

gonna check turbo bolts and dp tomaro
might have to drop the dam crossmember to do so

also will a leak on the airfilter going to the turbo cuase it to boost 4?
i dont think my worm clamp on the turbo inlet is tight becuase the turbo rests on the little metal that is under the engine code

 

help?