My AEM digital boost gauge is acting funny.

Sometimes it'll get "caught" at 0 or itll only hit 18 or 16 vacuum when deceling (instead of 26)

When it reads vacuum at 18 (8 lower than what it should) it reads 8 psi higher during peak book, even though I know the car isn't over boosting.

Anyone seen anything like this before?

 

Get the sensor out and check if anything is stuck inside it or blow inside it with a 30-35 psi of compressed air, also check that the wiring harness from the gauge to the sensor is not broken and well insulated.

 

This.

Sounds like something is stuck in the line.