Audi ECU Tune | Viezu USA

Get a professional Audi ECU tune from Viezu USA — stronger torque, sharper throttle response, and better overall drivability from a calibration built for your specific platform. Audi's TFSI turbocharged engines are exceptionally responsive to professional tuning, and whether you're driving an A4 daily or pushing an RS7 on track, Viezu calibrations are engineered to deliver real, measurable results.

Select your model, engine, year, and tune type below. Your vehicle-specific add-on price will be reflected at checkout.

What's Included

• Custom ECU calibration built for your specific engine and platform
• US-based technical support before, during, and after your tune
• Dyno-documented results (in-house flash)
• Clear communication on turnaround time and expectations
• Follow-up support if adjustments are needed

Tune Types Available

Stage 1 — OBD Tune
No hardware modifications required. Tuned directly through the OBD port. The most accessible entry point across the Audi lineup — significant torque and power gains on A4, A5, Q5, S4, S5, and RS platforms without a single hardware change.

Stage 2 — Supporting Modifications Required
For vehicles running upgraded intake, exhaust, intercooler, or other supporting hardware. Stage 2 extracts everything your modifications have to offer with a calibration built around your exact setup. Contact us before ordering to confirm your build is Stage 2 ready.

Economy / MPG Tune
Optimized for real-world fuel efficiency without sacrificing drivability. A practical option for A4, A6, and Q5 daily drivers looking to stretch their fuel budget on the 2.0L TFSI and 3.0L TFSI platforms.

TDI Diesel Performance Tune
Purpose-built for the 3.0L TDI V6 platform. Improved torque delivery, better throttle response, and stronger pulling power — without compromising the reliability Audi diesel owners depend on.

TDI Diesel Economy Tune
Calibrated specifically for fuel economy on TDI platforms. Real-world MPG improvements for high-mileage commuters and Q7 TDI owners.

Delivery Options

Handheld Tuner — Mailed to You
We ship a pre-loaded handheld tuning device directly to you. Plug it into your OBD port, follow the simple instructions, and your vehicle is tuned. No shop visit required. Compatible with most Audi platforms.

Local Flash — Salt Lake City, UT
Bring your vehicle to our Salt Lake City location for an in-person ECU flash. Includes a dyno pull for documentation. Recommended for Stage 2 builds, RS platforms, and any vehicle requiring bench access.

Supported Platforms (2015 and newer)

Sedans, Coupes & Sportbacks: A3, S3, RS3, A4, S4, A5 Coupe / Cabriolet, S5 Coupe / Cabriolet, RS5 Coupe / Sportback, A6, S6, RS6 Avant, A7, S7, RS7, A8 / A8L, S8, TT / TTS, TTRS, R8 V10 / R8 V10 Performance

SUVs & Crossovers: Q3, RS Q3, Q5 / Q5 Sportback, SQ5 / SQ5 Sportback, Q7, SQ7, Q8, SQ8, RS Q8

Don't see your exact configuration? Contact us at usa@viezu.com before ordering and we'll confirm compatibility.

Important Notes

• Newer Audi platforms (2020+) with Bosch MG1 ECU may require a bench unlock before tuning. Contact us before ordering to confirm what's needed for your specific year and model — we'll give you a clear answer before you spend a dollar.
• RS platforms have specific calibration requirements. RS3, RS5, RS6, RS7, and RS Q8 each have distinct tuning parameters — contact us before ordering to confirm the correct tune for your exact build.
• R8 V10 tuning is available but requires pre-order consultation due to the complexity of the naturally aspirated V10 platform.
• Stage 2 requires a pre-order consultation. We need to know your exact build before confirming pricing and turnaround.
• Emissions compliance is your responsibility. Tuning may affect emissions output. Off-road and track use only where applicable by law.
• Don't see your engine in the list? Select “Other — Contact Us” and we'll follow up with compatibility and pricing.
• Electric vehicles (e-tron, Q4 e-tron, Q8 e-tron) are not supported via traditional ECU tuning and are not included in this product.