Not really sure if it is the turbo or not. I was just relating it to the intake manifold because that was the last work done on it. Also It seemed to only start to cut out when the boost would kick in and usually about the same level of boost that is if you can believe the boost gauge on the instrument panel. Also when it would start to cut out i would drop it down to next lower gear and increase rpm and take away some boost it would stop. I'm just stumped ! It has no trouble codes showing.