Until recently, nitrous systems for dual 4-barrel intake manifolds have consisted of a couple of plates bolted under the carburetors, equipped with crude brass spray bars to inject nitrous and fuel into the intake charge. The ZEX system has nitrous and fuel outlets placed at 24 injection points around the perimeter of the intake manifold??s plenum. This distributes nitrous oxide and fuel perfectly and guarantees the most horsepower possible. With another ZEX -developed technology called Cryo-Sync?, super chilled nitrous is injected through the ZEX plates to cool the carbs and intake before being injected into the engine. Finally, ZEX Airflow Enhancement Technology creates an intense low pressure area under the carbs while you spray; helping to smooth and increase the airflow into the engine.