quick view Add to Cart MSD Engine Variable Valve Timing (VVT) Adjuster MSRP: $802.07 The boost timing masters allow you to adjust the amount of ignition retard from 1 degree per pound of boost to 3 degrees per pound via a control knob that you mount on the dashboard. This way you can make adjustments on the fly to prevent detonation as... Add to Cart Add to Wish List Add to My Wish List Create New Wish List Compare