Menu

Shop

Garage

Cart

Account

Product Summary

Universal Fit, Throttle Body Injection Style, Natural

  • Features an 865 CFM throttle body with integrated ECU, full color touch screen and simple 4-wire hookup
  • NEW ECU is 100% incorporated into the throttle body – no separate Power Module to mount
  • Direct replacement for common 4-barrel carburetors with 4150-style (square bore) flange
  • Master Kits – Includes a complete fuel system – 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!
  • NEW and Improved Calibration Wizard – Answer a few simple questions about your engine and it creates the base map, then starts tuning on its own! NO laptop required!

Key Specs

D-722
MFG. Part #2900-2
BrandMSD
CARB EO#

Need To Know

This Product Will Ship Free

Shipping Policies & FAQs

Quick and Easy Returns

Return Policy

Details

The Atomic 2 EFI system from MSD features 4, 100LB/HR Fuel Injectors capable of supporting up to 650 HP naturally aspirated or 635 HP on forced induction applications. The Atomic 2 ECU is capable of fuel map self-learning and ignition timing control, improving idle stability, drivability, and wide-open throttle horsepower! Designed to fit on 4150 intake manifold, with ample clearance for factory air cleaners.

The Atomic 2 EFI provides the performance and drivability benefits that you expect from fuel injection. Quick starts, smooth idle and great throttle response just to name a few. Combine the fact that the Atomic 2 will support ignition timing through the ECU and you have a win-win combination. Initial timing is handled through a compact handheld monitor where you simply answer a few car guy questions about your engine and you're off and running!

Features:

  • Direct replacement for common 4-barrel carburetors with 4150-style (square bore) flange
  • Master Kits - Includes a complete fuel system - 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!
  • NEW Throttle Body Flows 865 CFM and features 1-3/4" Throttle Plates
  • NEW Booster design offers superior fuel atomization
  • NEW ECU is 100% incorporated into the throttle body - no separate Power Module to mount
  • NEW and Improved Calibration Wizard - Answer a few simple questions about your engine and it creates the base map, then starts tuning on its own! NO laptop required!
  • NEW High-Resolution, Full Color, 3.5" Touchscreen for Initial Setup, Tuning, and Gauge Displays
  • NEW Optional Laptop Tuneability - Ideal for fine tuning and unique engine combinations or for Boosted applications up to 21.5 PSI
  • IMPROVED Built in Nitrous Control supports wet/dry nitrous
  • Integrated ignition timing control - includes an ignition coil driver, no ignition box required
  • Only 4 Wiring Connections Required! (Battery +, Battery - , Switched Ignition & RPM)
  • NEW Black Ceramic Finish Option for durable, modern looks. Also available in raw aluminum
  • NEW Throttle Body Linkage Now Includes Kickdown Support for 200R4, 700R4, C4, and C6 transmissions
  • NEW Higher Horsepower Rating - Supports 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 less pedal effort
  • External fuel pressure regulator required, set to a base pressure of 58.5 PSI, such as Holley 12-882. (Only on PN 2910-2 and 2910-2BK).
  • Fuel pump control built-in with a 40 amp relay
  • Fan control eliminates the need for external fan controller, simply wire a relay to the fan and tell the Atomic 2 ECU the desired fan activation temperature
  • NEW OEM Style TPS/IAC and Fuel Pressure sensor, for years of dependable service and easy replacement
  • The included Genuine Bosch LSU 4.9 Wideband Oxygen Sensor provides real-time Fuel Map Learn!
  • NEW - Includes clamp-on oxygen sensor kit for simplified, leak free installation. Stainless Steel T-Bolt clamps and a Stainless Steel (Weldable) oxygen sensor bung included
  • NEW - Compatible with MSD, Holley Hyperspark and OEM Ignition Systems
  • NEW - Compatible with Holley EFI digital dashes, gauges and fuel system accessories

Charts

Specifications

D-722
KEY SPECS
MFG. Part #2900-2
BrandMSD
CARB EO#
GENERAL
Sold in QuantityKit
GTIN Code090127110010
EGRNo
Injection StyleThrottle Body
Intake Manifold IncludedNo
Fuel Rails IncludedNo
Throttle Body IncludedYes
CFM865 CFM
Transmission ControlNo
Injectors IncludedYes
Calibration Module IncludedYes
Wiring Harness IncludedYes
Fuel Pump IncludedYes
Distributor IncludedNo
TPS Sensor IncludedYes
IAC Motor IncludedYes
IAT Sensor IncludedNo
MAP Sensor IncludedYes
Fuel Pressure Regulator IncludedYes
ECM IncludedYes
Injector Size100 lbs./hr
Throttle Body FinishNatural
Throttle Body MaterialAluminum
Venturi Quantity4
Throttle Body Flange Type4-Barrel Square Bore