I have a Dashawk to monitor performance. I live in MD and realize sometimes the ECU lowers boost levels. The other day it was 7 degrees according to my car and i could only hit 12psi, This was after plenty of attempts. Today it was 19 degrees and i had no problem hitting 16 psi. Okay so maybe in cold weather the car settles down right? Later this evening it was down to 7 degrees and i had no problem holding 15/16 psi??? i need some sort of engine management