MSD Atomic 2 EFI vs Atomic 1: Upgrades and Improvements Explained!
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Atomic 2 Throttle Body Features

- Throttle body flows 865 CFM and features 1 ¾” throttle plates
- Booster design offers superior fuel atomization
- Available in a raw aluminum finish or a black ceramic option for durable, modern looks
- Higher horsepower rating - Supports up to 650 HP naturally aspirated or 635 HP in forced induction applications with four 100 lb/hr injectors
- Roller bearing throttle shafts for smooth throttle feel and less pedal effort
Atomic 2 ECU and Electronics

- ECU is 100% incorporated into the throttle body – no separate power module to mount
- High-resolution, full color, 3.5” touchscreen for initial setup, tuning, and gauge displays
- 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!
- Optional laptop tuneability – Ideal for fine tuning, unique engine combinations, or boosted applications up to 21.5 psi
- Built-in nitrous control supports wet and dry nitrous systems
- Integrated ignition timing control when used with a Sniper Hyperspark or MSD Pro Billet distributor – includes an ignition coil driver so no ignition box is required
- OEM-style TPS, IAC, and fuel pressure sensor for years of dependable service and easy replacement
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