really bad boost leak

[aakido]

i have a 92 gsx with 16g upgrade, 255 walbro, s-afc, modified mas, DSR FMIC, turboxs rfl,2.5 in down pipe with 2.5 tubing. one day i was boosting fine 17-18psi then the next morning bam!! 10psi, i touched nothing, and checked everything, cant find the leak, need help fast

 

[PropXprt]

Well I would say build a leak detector if you haven't and pressurize the system... www.vfaq.com I've already gotten my 4$ worth out of that thing...