I have 2017 ND1 with BBR GTI turbo kit out of Europe. It runs E-Boost40 boost controller and E-Boost40 is reading about 5 psi high compared to my boost gauge.
EB40 used to read -16 vacuum at idle and i think was accurate. Now it reads just zero except at start up it reads -5psi. Cruising it reads a few psi. Pretty sure should show vacuum when cruising. Like I'm almost certain boost controller is faulty or something. I reset the EB40 boost controller already and nothing changes. So max boost captured on boost controller will be 5 psi high compared to max boost on the boost gauge and 5 psi high almost always. Is there some trick I don't know of? Or is my boost controller faulty and shot? Any advice is greatly appreciated.