Black anodized billet dual port manifold with built in mounting provisions Two 1/4” NPT push-lock fittings for easy plumbing and installation Two pre-terminated connectors simply plug into the solenoids and extra pins into Holley EFI ECU connectors Proprietary design to flows nearly 40% more than comparable designs and up to 90% more than conventional 3-port boost control solenoids Proprietary design to flows nearly 40% more than comparable designs and up to 90% more than conventional 3-port boost control solenoids