Some aftermarket EFI management systems fire the fuel injectors in the same order as the engine's firing order. These are called synchronization systems and are found in most high performance applications. These systems require sync signal to know when the number one cylinder is firing. These MSD Distributors feature an adjustable cam sync pickup so you can set it to your ECU's requirements. Two models are offered: one with non-magnetic sync pickup and a new version with a Hall-effect switch. This distributor has an adjustable cam-sync pickup and a trigger pickup for an MSD Ignition. It has a small diameter cap, adjustable rotor and iron gear.