Re: 21 PSI on a GIAC Chip, this normal???? (Hapa88)
I use my boost gauge as a "REFERENCE" number only, I now only trust the numbers that come out of the VAG-COM. I've noticed difference 1-2psi from what I see on the gauge and what I log on the PC. Also the ECU looks at Pre TB pressure and gauge looks at manifold pressure (after TB.)
I use my boost gauge as a "REFERENCE" number only, I now only trust the numbers that come out of the VAG-COM. I've noticed difference 1-2psi from what I see on the gauge and what I log on the PC. Also the ECU looks at Pre TB pressure and gauge looks at manifold pressure (after TB.)
