[Andrew025]

Originally Posted by Astroboy

Did you ever figure it out?

Originally Posted by CSG Mike

Your factory MAP sensor can read 20 psi absolute.

Boost is going to be what your MAP sensor is reading minus ambient. Sea level is about 14.7 psi, or 1 bar.

20 - 14.7 ~~ 5.5 psi.

You'll notice your 5.5 psi occurs quite a bit before redline, and as you know, your boost continues to climb as you rev higher. The boost is there; you just don't have the equipment to read it.

If you go somewhere where ambient pressure is lower, you will see a higher boost reading.

*dont* change your MAP sensor; you'll need a custom tune if you do so.