What we do
Performance tuning & complete maintenance under one roof
We do both. Oil changes, brakes, fluid services, repair, and factory scheduled maintenance, alongside dyno tuning, ECU and TCU calibration, and performance parts installation. One shop for everything your European or exotic car needs.
Performance
Dyno tuning, software mapping, exhausts, parts installation, and track setup.
Maintenance
Oil changes, repairs, brakes, fluids, transmission, and factory-scheduled service.
Reputation
Why Round Rock trusts
ECC Tuned ATX
Our reputation was built one vehicle at a time. We focus on honest diagnostics, quality repairs, and clear recommendations based on what your car actually needs.
Dyno Tested
Verified in house for consistent, proven results
250+ Builds
rusted by owners across 250+ builds.
ECU & TCU Tuning
Custom tuning for power, drivability, and reliability
Ongoing Support
Performance & maintenance in one shop
Specialization
BMW, Audi, Mercedes-AMG, Porsche & Exotic European Cars
We service and tune a wide range of European performance vehicles, including BMW, Audi, Mercedes-AMG, Porsche, Ferrari, Lamborghini, and McLaren. Our focus is providing accurate diagnostics, performance upgrades, and maintenance solutions tailored to these specialized platforms.
Serving Round Rock, Austin, Cedar Park and Georgetown
Based at 3401 Sunrise Rd in Round Rock, just north of Austin, we serve European and exotic car owners throughout the greater Austin metro, including Cedar Park, Georgetown, and Pflugerville.
BMW
Mercedes Benz
Audi
Porsche
Ferrari
Lamborghini
McLaren
Aston Martin
Fiat
Jaguar
Land Rover
Lotus
Maserati
Bentley
Mini
VW
About us
ECC Tuned ATX
ECC Tuned ATX was built for European and exotic car owners who want a shop that truly understands their vehicle. Based in Round Rock, our technicians specialize in the platforms we service, bringing precision tuning, advanced diagnostics, and real-world experience to every project.
What we stand for
Honest diagnostics, fair pricing, no upsells. We'd rather tell you a part doesn't need replacing than sell you one.
Why Round Rock trusts us
Our reputation wasn't built through advertising. It was built one car at a time, by technicians who explain what's actually wrong and don't push upgrades a car doesn't need.
Frequently Asked Questions
Questions we get asked most
We specialize in European and exotic vehicles, including BMW, Mercedes AMG, Audi, Porsche, Ferrari, Lamborghini, and McLaren. We do not service every make and model, and that is intentional. Specialization means deeper knowledge, proper diagnostic equipment, and parts selected specifically for these platforms.
This is the most common concern we hear, and it's a fair one. Under the Magnuson-Moss Warranty Act, a dealer cannot void your warranty simply because you've had an aftermarket tune — they must prove the tune directly caused the issue in question. That said, every situation is different. We'll walk you through exactly what to expect for your specific car and build before we touch anything.
A generic flash applies a pre-built map from a database — it's designed for the average car under average conditions. A dyno tune is developed and validated live on your specific car, accounting for your mods, your climate, your fuel, and your goals. Every tune we deliver is proven on our in-house dyno before you drive it. That's the difference between a number on a printout and power you can actually trust.
Both. We handle everything from oil changes, repairs, and brake service to performance builds and tuning, all under one roof. Many shops only focus on performance work, but we also handle full maintenance. The shop for everything your car needs.
Yes, with some conditions. We're happy to install customer-supplied parts for brands we're familiar with. That said, if you purchase through us as an authorized dealer — KW, Öhlins, Akrapovic, Brembo, and 40+ others — you get the right part for your car, dealer-backed, and installed by the team that knows it. Reach out and we'll talk through what makes sense for your build.
We're at 3401 Sunrise Rd, Suite 100, Round Rock, TX 78665 — just north of Austin. Hours are Monday through Friday, 9am to 6pm. We serve the greater Austin metro including Cedar Park, Georgetown, Pflugerville, and North Austin. Call us at (512) 777-2799 to schedule.
What Our Customers have to say
Round Rock, Texas
Visit the shop
3401 Sunrise Rd Ste 100, Round Rock, TX 78665
(512) 777-2799
Mon–Fri, 9am–6pm