FAST EZ-EFI GM LS III/IV fuel injection systems with FAST LSXRT intake manifold combine the bolt-on XIM coil-on plug ignition system with the revolutionary self-tuning FAST EZ-EFI to give LS applications the easiest, most advanced self-tuning electronic fuel injection system available. Systems include: * FAST LSXRT intake manifold * Big mouth 102MM throttle body * Billet aluminum fuel rails * Fuel injectors * Wide band oxygen sensor * TPS * IAC * Coolant and air temperature sensors

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