The Edelbrock Pro-Flo 4 XT EFI Kit Without Tuner #359230 for Chrysler big-block 413, 426, 440 RB engines is a fully sequential multi-port injection system designed with a fuel injector strategically positioned in each runner of the intake manifold to deliver the best fuel atomization and most even distribution to each cylinder. This system features a black powder-coated Pro-Flo XT manifold that comes preassembled with high-flow injectors, fuel rails and 90mm throttle body. All supporting sensors, wire harnesses and ECU are included. The high-performance Pro-Flo XT manifold is designed with a large plenum and long tapered runners for high-horsepower and/or large cubic-inch applications. This kit uses 35 Lb/Hr injectors and is rated for 550 horsepower at 58 PSI of fuel pressure. This kit does not include the Android-based tablet with E-Tuner app. For the complete system with tuner, see kit #35923.