The MicroSquirt has long been the go-to choice for tuners and builders looking for a compact, affordable, and capable standalone ECU. Originally developed for powersports, ATVs, and motorcycles, it quickly became a favorite for everything from small displacement projects to full-blown turbocharged V8 race cars.
Now, AMP Engine Management is taking it to the next level. Introducing the AMP’d MicroSquirt — a refined, automotive-grade version built to handle the demands of modern performance builds.
View the AMP’d MicroSquirt on our site
Why Choose the AMP’d MicroSquirt?
The AMP’d MicroSquirt was designed for real-world automotive use, offering easier installation, improved durability, and expanded compatibility.
Key advantages:
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Ease of Installation: Built-in hardware eliminates the need for external resistors or wiring workarounds.
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Flexibility: Ready for a wider range of sensors, ignition systems, and injector setups.
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Durability: Improved injector drivers, optoisolated inputs, and hardened circuits for demanding environments.
Ideal for:
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6- or 8-cylinder distributorless (wasted spark) ignition setups
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4-cylinder sequential coil-on-plug ignition
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Fuel-only installs triggered from the coil negative
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6 injectors in the 8–10 Ω range, or 8+ injectors total
AMP’d Hardware Upgrades
The AMP’d MicroSquirt retains everything that made the original successful — plus critical hardware improvements for automotive builds:
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2 high-impedance injector drivers — Max peak current increased to 19 amps
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2 switchable VR conditioned inputs — Crank and cam inputs compatible with VR, Hall, or optical sensors
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Improved optoisolated RPM input — Higher voltage/current tolerance for coil-negative fuel-only applications
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2 general-purpose on/off outputs — Re-purposable as spark outputs with selectable pull-ups
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1 PWM IAC output — Can serve as a general-purpose output
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1 dedicated fuel pump output
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7 analog inputs
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Made in the USA
Software & Tuning Capabilities
Running the same proven firmware base as the standard MicroSquirt, the AMP’d edition provides powerful tuning control and compatibility:
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Speed Density, Alpha-N, or MAF-based fuel/spark control
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0.66 µs injector pulse width resolution
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Blended load support (including ITB mode)
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OEM cam/crank sensor compatibility
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Closed-loop or open-loop idle and boost control
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On/off nitrous and boost control
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Staged injection, rotary support, and 2-step launch control
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Wideband AFR target tables and flex-fuel input
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Sequential shift cut and air-shifter support
Buying Options
The AMP’d MicroSquirt is available as:
Both options simplify installation and wiring for new builds or existing systems.
Built by Enthusiasts, Proven by Experience
The AMP’d MicroSquirt was developed from years of tuning, testing, and customer feedback. Whether it’s powering a turbo Miata, LS swap, or boosted daily driver, this updated MicroSquirt delivers the spark control, injector handling, and reliability you need — all in a compact, cost-effective package.
This isn’t just a “budget ECU.” It’s a proven performance controller refined for modern automotive applications.