Originally Posted by TBatt

Which MAP sensor are you using? The stock sensor was not designed to read pressure so it could be off. I'm using the Nissan GTR sensor that SpecialtyZ sells along with there remote tune package. My AEM boost gauge and the GTR sensor agree with each other.

When I was looking for a boost leak I made a leak tester and pressurized the system up to 8psi and both of the sensors read the same (engine not running) during the test. The leak showed up around 3psi if I remember correctly. If you have an aircompressor and a good pressure regulator I'll be glad to loan you my tester that I made.

Top, do you have any words of wisdom that you can share?