What is Turbo Lag??
Turbo lag is the time delay of boost response after the throttle is opened when operating above the boost threshold engine speed. Turbo lag is determined by many factors, including turbo size relative to engine size, the state of tuning of the engine, the inertia of the turbo’s rotating group, turbine efficiency, intake plumbing losses, exhaust backpressure, etc.
Turbo Lag is the time it takes from when you smash the “go” pedal to the time the turbos are making an appreciable amount of boost. For some reason people have it stuck in their mind that it takes 10 minutes for the turbos to respond. That is simply not the case. Most of the single turbo kits are making FULL BOOST before 3000 rpm or less (try that with a centrifugal supercharger). Sure, if you mate up a T76 to a stock 5.0 then yes, there will be some turbo lag. But when you get a turbo that is designed to work with your combination then there should be very, very little lag. Twin turbos have even less lag, the power is there right after you hit the gas basically. You can even launch off the line under boost with a 5 speed if you get a two step. I have made 10 psi at 5000 rpm with my single turbo kit and a simple MSD two step.
