Proflow's Black CDI 6AL ignition boxes will increase voltage across the plug gap, improving drivability and performance for everyday drivers. They can be installed on 4-, 6- or 8-cylinder engines equipped with a 12 V negative ground electrical system and distributor. These high-powered sparks ensure complete combustion of the fuel mixture at racing rpm, which in turn produces more power! Get improved performance and engine protection with the Proflow's Black CDI 6AL Ignition box,