Msd Ignition Atomic Efi 2 Master Kit - Natural Finish

The Atomic 2 EFI system by MSD incorporates four 100LB/HR fuel injectors, supporting up to 650 HP in naturally aspirated applications or 635 HP in forced induction setups. This system is designed to fit on a 4150 intake manifold, providing sufficient clearance for factory air cleaners.

Key Features:

• Direct replacement for common 4-barrel carburetors with a 4150-style (square bore) flange.
• Master Kits include a complete fuel system with an external fuel pressure regulator preset to 58.5psi, 20ft of 3/8” EFI Rated Fuel Hose, Fuel Pump, Filters, necessary hardware, and bulkhead fitting to return fuel into the tank.
• Throttle body flows 865 CFM and features 1 ¾” throttle plates.
• Booster design offers superior fuel atomization.
• ECU is 100% incorporated into the throttle body, eliminating the need for a separate Power Module.
• Improved Calibration Wizard for easy setup, tuning, and gauge displays on a high-resolution 3.5” touchscreen.
• Optional laptop tuneability for fine-tuning and unique engine combinations or boosted applications up to 21.5 PSI.
• Built-in nitrous control supports wet/dry nitrous applications.
• Integrated ignition timing control with an ignition coil driver, eliminating the need for an ignition box.
• Only four wiring connections required (Battery +, Battery -, Switched Ignition & RPM).
• Available in a durable black ceramic finish or raw aluminum.
• Throttle body linkage now includes kickdown support for 200R4, 700R4, C4, and C6 transmissions.
• Higher horsepower rating, supporting up to 650 HP naturally aspirated or 635 HP forced induction with four 100 Lb/Hr injectors.
• Roller bearing throttle shafts for smooth throttle feel and reduced pedal effort.
• External fuel pressure regulator required, set to a base pressure of 58.5 PSI.
• Fuel pump control built-in with a 40 amp relay.
• Fan control eliminates the need for an external fan controller.
• OEM-style TPS/IAC and fuel pressure sensor for dependable service and easy replacement.
• Includes a Genuine Bosch LSU 4.9 Wideband Oxygen Sensor for real-time fuel map learning.
• Compatible with MSD, Holley Hyperspark, and OEM ignition systems.
• Compatible with Holley EFI digital dashes, gauges, and fuel system accessories.

The Atomic 2 EFI system ensures quick starts, smooth idle, and excellent throttle response while offering advanced self-learning technology for optimal performance and drivability.