When cruising in high gear with the converter locked I have noticed the rail pressure will fluctuate several thousand psi up and down with light throttle input. It does not do this at all with the converter unlocked. I am pretty sure it has to do with me running a stock like lbf map to keep smoke down and not having the ability to regulate boost with a vgt. Is there a way to tune around it or will a have to switch to a more canned tune type lbf file? Here is a pic of my lbf map. The truck drives great with the exception of maintaining speed on the highway along with small throttle changes .