At Precision Auto ECU, we specialize in mail-in ECU, TCU, EIS, ISM, ESL, BCM, repair, cloning, and programming services for nearly all makes and models.

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Why customers choose us:

• 🔧 Expertise You Can Trust – Years of hands-on experience with ECUs, TCUs, EIS, ISM, ESL and other automotive modules.

• ⚡ Fast Mail-In Service – Clear instructions, safe shipping, and quick turnaround so your vehicle is back on the road with minimal downtime.

• 💻 Dealer-Level Equipment – We use OEM-grade diagnostic and programming tools, ensuring factory-accurate results.

• 💲 Cost-Effective Solutions – Avoid expensive dealership programming fees with our plug-and-play cloning and repair options.

• 🛡 Warranty & Reliability – Every job comes with a lifetime workmanship warranty for peace of mind.

• 🌍 Wide Coverage – From domestic and Asian vehicles to high-end European brands, we support most ECUs on the market.

We don’t just fix ECUs — we give shops and car owners a hassle-free, professional solution that saves time, money, and stress.