I was tuned with my AEM EMS and 5 bar AEM to run at 21 psi, however my AutoMeter boost gauge read 25....so I figured it was off by a few psi. Now I was taking a log of one of my runs, and my map sensor is saying that I am boosting at 25???? So thinking it was really boosting at 25 I turned my boost down so it read 21, and could hardly break a 13.0. Now I don't know what to believe.....

So I guess my question is......Are the AEM 5 bar and the Autometer gauge known to read higher boost???? Thanks

 

they must be accurate if they both read the same thing