Precision Automotive Repair & Performance

How We Tune

Standalone ECU tuning & e-tune services

Two ways to get it done right, depending on what your car or truck is running — no generic base maps, ever.

Swapped & Custom Builds

Standalone ECU Tuning

Swapped in a different engine, or running a full custom build? We tune standalone ECUs like MegaSquirt from the ground up — fuel, ignition, and drivability calibrated to match your exact combination.

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GM • Mazda • Subaru • Nissan

E-Tune Services

We build custom e-tunes from your vehicle's data for GM, Mazda, Subaru, and Nissan platforms — including HP Tuners tuning for GM gas cars and trucks. Whatever you're driving, the tune is built around how you actually drive it.

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Get A Tune Quote

Text us your setup

Tell us what you're driving, what ECU you're running, and what you're after — we'll text you back with next steps.

Common Questions

ECU Tuning FAQ

What is ECU tuning?

ECU tuning means recalibrating your vehicle's engine control unit — the computer that manages fuel, timing, and other settings — to improve performance and drivability, or to match modifications you've made. It can be done on a factory ECU through an e-tune, or on a standalone aftermarket ECU.

What is an e-tune?

An e-tune is a custom tune built remotely from your vehicle's data logs rather than in person on a dyno. We offer e-tune services for GM, Mazda, Subaru, and Nissan platforms.

Do you tune GM cars and trucks?

Yes. We use HP Tuners to tune GM gas cars and trucks, dialing in the factory ECU for your specific setup and goals.

Do you tune Mazda, Subaru, and Nissan?

Yes — Mazda, Subaru, and Nissan are among our most popular e-tune platforms, alongside GM.

What is standalone ECU tuning (MegaSquirt)?

MegaSquirt is a standalone aftermarket ECU commonly used on swapped and custom-built cars whose factory computer can't run the new combination. We tune standalone setups from the ground up, matching the calibration to your exact build.

Where can I get ECU tuning near Jasper, AL?

Precision Automotive Repair & Performance, located at 2105 Commerce Ave, Jasper, AL 35501, offers standalone ECU tuning and e-tune services for GM, Mazda, Subaru, and Nissan. Call (205) 265-2521 or use the quote form above to get started.

Ready To Get Tuned?

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Walk-ins welcome — or reach out ahead of time to talk about your build.

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