Unlock Real Power
Custom ECM tuning and performance upgrades in Atlanta. Dyno-tested, data-driven, and built for real-world reliability.
Book a TuneWhat We Do
ECM Tuning
Precision engine tuning customized to your vehicle, modifications, and driving goals. No canned files — only data-backed results.
Performance Upgrades
Intakes, exhausts, fueling, ignition, and supporting mods installed and tuned to work together safely and efficiently.
Advanced Diagnostics
Professional diagnostics and data logging to identify issues accurately and prevent costly guesswork.
Proven Results
Real Horsepower Gains
Custom tuning focused on measurable improvements in power, response, and drivability.
Dyno Verified
Every tune is tested and validated so you know exactly what your vehicle gained.
Street & Track Ready
Safe power with proper margins for daily driving or weekend racing.
Why Down Dirty 84
No Canned Tunes
Every vehicle is different. We tune using live data, logs, and dyno feedback.
Atlanta Based
Local performance shop trusted by Atlanta enthusiasts who want real results.
Reliability First
Power is nothing without longevity. We tune engines to last.
Ready to Transform Your Build?
Book your dyno session or request a custom tuning quote today.
Schedule NowContact & Booking
Email: info@downdirty84llc.com
Atlanta, GA
Business Hours: Mon–Sat, by appointment
Vehicle Eligibility & Disqualification Notice
Down Dirty 84 LLC reserves the right to refuse or discontinue service on any vehicle deemed unsafe, mechanically unsound, or unsuitable for tuning or dyno operation.
- Active misfires, severe knock, or unresolved check engine faults
- Oil, fuel, or coolant leaks
- Overheating or cooling system issues
- Unsafe fuel system, wiring, or mechanical condition
- Improperly installed or incompatible modifications
By booking an appointment, you acknowledge that tuning and performance testing carry inherent risks and agree that Down Dirty 84 LLC is not responsible for pre-existing conditions or failures.