General Maintenance, Troubleshooting & Accidents.
I have a 2016 WRX with 110K miles, a Cobb Big SF air Intake, Cobb Air Oil separator, Cobb Hybrid BPV, and an accessport v3, stage 1+ BIGSF 93 V400 tune, OTS tune from cobb and I use 93.
I’m getting a P0172 code and am currently 15psi when about a few weeks ago I hit a max of 19psi. Sometimes...