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Atomic EFI LS
EFI control made simple for LS swaps—MSD Atomic EFI LS delivers clean, integrated power management for Gen III/IV engines.
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Atomic EFI TBI
Throttle body EFI systems that deliver carb-like simplicity with fuel injection performance and drivability.
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Atomic EFI TBI
Features
- Less wiring and fewer connections for the easiest installation
- Integrated sensors reduce the number of connections
- Mounts in place of standard square bore carburetors
- Self-learning technology keeps the engine performing smooth through any condition
- Supplied with wide-band 02 and coolant temp sensors for easy installation
- Controls the activation of two cooling fans
- Supports nitrous and boosted applications
The Atomic TBI is designed to support up to 625 horsepower when used with the specified high horsepower fuel pump.

Diagram
- Internal Fuel Rail - By integrating the fuel rail we were able to remove fitting connections to reduce the areas that a leak could develop (not to mention the enhanced appearance).
- ECU and Sensors - The ECU is integrated to the throttle body! This unique design reduces wiring and keeps your EFI installation easier than ever. The TPS, MAP, IAT and fuel pressure sensors are all incorporated into the ECU saving you wiring and connections. In fact, the only sensors you need to connect are the coolant temp and the wide-band oxygen sensors.
- Injectors - Fuel delivery is provided by four precision 80-pound injectors. These injectors feature a stainless steel ball and seat metering method for maximum internal sealing. For a secure mount the injectors are sealed between the housing and the cast fuel rails.
- TPS - The Atomic’s TPS is an automatic, self-calibrating, non-contact sensor. That means you don’t have to worry about configuring it during set up. Also, with no contact, there is nothing to wear out or replace.
- Mount and Blades - The Atomic throttle body will bolt in place of a standard square bore carburetor and accepts most common throttle and kick down linkages. The throttle bores are 1.75” diameter and each blade is supported with precision roller bearings for smooth pedal operation.

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MSDAtomic EFI Master Kit This is the complete kit for anyone planning to convert from a carburetor to Atomic EFI. You get the Throttle Body, Power Module (with Wide Band O2 sensor), Handheld Controller, and the Standard Fuel Kit for up to 525hp (at the crank).$2,099.95Compare
MSDHigh Pressure Electric Fuel Pump Multiport EFI systems require a stable fuel supply to maintain best performance throughout the engine's rpm range.Part# 2225In StockMSRP $183.95$146.65Save $37.30Compare
MSDAtomic AirForce Gen-V LT Intake Manifold, Red Performance Polymer Intake Manifold for GM Gen-V LT EnginesMSRP $1,856.95$1,483.95Save $373.00Compare
Part# 2942In StockMSRP $147.95$117.85Save $30.10Compare
MSDAtomic EFI Throttle Body Kit MSD CARB Legal Atomic Throttle Body Fuel Injection Conversion for Carbureted Engines$1,649.95Compare
MSDAtomic AirForce LS Cathedral Port Intake Manifold - Red Performance Polymer Intake Manifold for GM LS1, LS2, and LS6 EnginesMSRP $1,518.95$1,213.95Save $305.00Compare
MSDAtomic AirForce LS7 Intake Manifold - Red Performance Polymer Intake Manifold for GM LS7 EnginesMSRP $1,574.95$1,258.95Save $316.00Compare
MSRP $483.95$385.95Save $98.00Compare
MSRP $618.95$493.95Save $125.00Compare
MSDMsd Atomic EFI Billet Fuel Rails Billet aluminum fuel rails for use on LS1/2/6 Atomic AirForce intake manifolds. Fits manifold part numbers 2702, 27023 and 27024MSRP $281.95$224.95Save $57.00Compare
MSRP $1,518.95$742.95Save $776.00Compare
MSDAtomic TBI Throttle Position Output Module Provides 0-5V TPS signal for a transmission controller or other accessory.$299.95Compare
MSDSeal Port Kit For Airforce Manifold Pn 2701-2702 Use this seal port kit for your PN 2701-2702 AirForce Manifold. Set of 8.Part# 2710In StockMSRP $96.95$77.35Save $19.60Compare
$549.95Compare
$158.95Compare
$92.19Compare
MSDPerimeter Seal Kit For Airforce Manifold - LS Use this perimeter seal kit for your PN 2701-2702 AirForce Manifold.Part# 2711In Stock$65.85Compare
MSDProgrammable Fuel Pump Voltage Booster The controller allows you to increase voltage based on boost.MSRP $787.95$628.95Save $159.00Compare
MSDMSD Atomic EFI Billet Fuel Rails LS7 Atomic AirForce Intake Manifolds - Fits Manifold Part Numbers 2701 / 27013 / 27014MSRP $281.95$162.95Save $119.00Compare
Part# 2707In Stock$79.09Compare
MSDMSD Atomic EFI Billet Fuel Rails LS7 Atomic AirForce Intake Manifolds - Fits Manifold Part Numbers 2701 / 27013 / 27014MSRP $415.95$332.05Save $83.90Compare
$104.95Compare
Part# 2924In Stock$59.29Compare
MSDThrottlebody Sealing Plate Kit For Atomic Airforce For Pn 2701 And Pn 2702 Throttlebody Sealing Plate Kit for Atomic Airforce for PN 2701 and PN 2702Part# 2704In Stock$59.25Compare
MSDAtomic TBI, ECU, Later Version Replacement Part, on Later version Atomic TB using EV1 Connector.MSRP $618.95$302.95Save $316.00Compare
Part# 2927In Stock$145.95Compare
MSDMSD Atomic EFI Billet Fuel Rails Billet aluminum fuel rail kit for use on Gen-V LT1 Atomic AirForce intake manifolds. Fits manifold part numbers 2700, 27003 and 27004.MSRP $381.95$186.95Save $195.00Compare
MSDIdle Air Control Motor for Atomic TBI Replacement IAC motor for Atomic TBI and Atomic TBI 2, and Sniper 2$59.25Compare
MSDAtomic, Fuel Pressure Regulator The recommended operating range is 15-90 psig (pounds per square inch gauge).$368.95Compare
MSDMsd Atomic EFI Billet Fuel Rails Billet aluminum fuel rail kit for use on LS1/2/6 Atomic AirForce intake manifolds. Fits manifold part numbers 2702, 27023 and 27024.$399.95Compare
$749.95Compare
Part# 2929In Stock$67.35Compare
MSDAtomic TBI, ECU, Early Version Replacement Part, on Early version Atomic TB using EV6 Connector.$549.95Compare
MSRP $1,124.95$549.95Save $575.00Compare
MSDAtomic Airforce 3-Bolt Throttle Body Adapter Supplied with an adapter plate and mounting hardware. Note: OE 3-bolt throttle body seal not supplied.Part# 2709In StockMSRP $87.95$58.39Save $29.56Compare
MSDMsd Atomic EFI Billet Fuel Rails Billet aluminum fuel rails for use on Gen-V LT1 Atomic AirForce intake manifolds. Fits manifold part numbers 2700, 27003 and 27004.Part# 2724In StockMSRP $281.95$137.95Save $144.00Compare
Part# 2933In Stock$73.69Compare
MSDLS Airforce Intake Fastener Kit For Pn 2701 And Pn 2702 Replacement fastener kit for LS Airforce intake manifolds PN 2701 and PN 2702Part# 2712In StockMSRP $281.95$137.95Save $144.00Compare
MSDAtomic Airforce Throttle Body Seal For Pn 2700, Pn 2701 And Pn 2702 Atomic Airforce Throttle Body Seal for PN 2700, PN 2701 and PN 2702Part# 2715In Stock$18.40Compare
MSDO-Ring Service Kit For Airforce 2701/02 O-ring kit that seal the bolts that hold the manifold to the cylinder head when using an Atomic AirForce Manifold PN 2701 or 2702.Part# 2716In Stock$18.40Compare
MSDAdapter Kit For Airforce Manifold Retain your LS-1 style injectors with your PN 2702 AirForce Manifold.MSRP $63.95$31.05Save $32.90Compare
MSDATOMIC TBI, COOLANT TEMP SENSOR Atomic EFI Support Component. Atomic TBI Coolant Temperature Sensor$13.66Compare
Part# 2935In Stock$39.41Compare
Part# 29291In StockMSRP $98.95$47.93Save $51.02Compare
Part# 2708In StockMSRP $66.95$32.59Save $34.36Compare
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Atomic EFI
Simplify your EFI conversion with MSD’s Atomic EFI systems—built for power, reliability, and easy installation.












































