A turbo, or turbocharger, refers to a gas compressor that increases air density entering the engine, thus creating more power. Anti-lag turbos work with turbochargers to increase their efficiency.
Turbo Lag
Anti-lag turbo systems minimize turbo lag. Turbo lag refers to a hesitation in the throttle response when it moves out of idle position. Throttle response is the vehicle's response to depression of the accelerator pedal. Slow throttle response time results from the exhaust system lagging, or reacting slowly, while coming to high pressure, which in turn causes the turbine rotor to lag while reaching a sufficient speed to boost pressure and bring the turbo up to proper functioning speed.
Air Bypass
Anti-lag turbo systems decrease pressure across the restrictors, or devices designed to reduce engine power, located at the turbocharger inlet. This pressure drop enables the turbocharger to spin faster and produce a higher boost of speed to the engine.
Methods
Anti-lag turbo system methods include throttle air bypass. An air bypass solenoid or valve is externally attached to the throttle, allowing it to open between twelve and twenty degrees, thus enabling air to enter the engine. The other anti-lag turbo system method uses a bypass valve to send air directly to the exhaust manifold, which supplies the air and fuel mixture to the engine cylinders.
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