Stage 1+ sf not hitting target boost
Hey guys. Im new to the tuning and subaru scene. I have a 2011 wrx and im runnimg cobbs stage 1+ sf. I know cobb says you should 17.5 psi on 93 octane which is what i run. I logged my car the other day how cobb recommends and my car wouldnt boost above 14.5. I then tried the hwg map and only hit 15.5? Ive already replaced the tmic to tb hose with one from cobb and ive also checked all the vaccum lines with no luck? Does anyone have any ideas? Im about to take it to a shop for a leakdown test but i figured id try my luck on here first.