from 3000 up the tdo5'smake more power than stock or even sport 500's. Just so happens that a speacial thing occurs at 4500 where they slam and all of a sudden gain massive amounts of power. This phenomina initself can be called lag if you want to call it that. BUT even thogh while LAGGING these turbos are putting out more power than your small "lowlag turbos" Its just that the wow factor at 5000 rpms is much greater than with stockers of sport 500's......
Lets agree that Lag is an irelevant term and focus on a cars power as it relates to rpm. VS other cars with different setups.