what is a safe boost on a 97 gst!?
 

97 gst 16 g turbo injen intake manifold 2.5 exhaust back, 255 walbro pump, stock injecxtors ngk spark plugs, new fuel regulator new map censor crankshaft sensor o2 sensor new head gasket head bolts valve gasket all kinds of work..the turbo is running stock boost due to no SAFC and boost controller,,, Heard there were problems with the APEXI controller? any others? also gonna up my boost so i was wonderring what was safe?