My opinion is that the Comptech icebox will eliminate the throttle lag because the air has a shorter distance to travel from the filter to the intake manifold compared to a CAI. I had disucssed this briefly with Mike B@Comptech a couple of years ago and he was the one that had made this comment. He said when you are slowing down or starting from a dead stop, when you floor your car, your engine is going to suck in more air from a shortram setup than a CAI.