Moonlight Performance LLC

In Forsyth County, this specialized performance shop targets GM LS and LT V8 platforms with measurable gains achieved through disciplined tuning, thorough diagnostics, and a client‑centered workflow. The team blends factory‑grade knowledge with race‑inspired precision to preserve drivability and reliability alongside every horsepower increase. From daily drivers to competition builds, the process emphasizes clean data, repeatable results, and transparent communication that keeps projects on track and budgets in check.

Core capabilities include:

• Custom Tuning: GM LS/LT V8s optimized with Holley Terminator, Holley Sniper, and HP Tuners to unlock horsepower while maintaining driveability.
• Engine and Drivetrain Services: Comprehensive maintenance, repairs, and performance‑preserving improvements to protect gains.
• LS Platform Upgrades and Maintenance: Targeted upgrades, component replacements, and preventative care for LS‑based builds.
• Dyno Tuning On‑Site: On‑site dynamometer testing with data logging to validate air/fuel, timing, and power curves across operating conditions.
• Diagnostics and Troubleshooting: Transmission, fuel, ignition, and sensor diagnostics to quickly pinpoint issues and optimize performance.
• Transparent Quotes and Scheduling: Online quote requests help plan turnaround times and set clear expectations.

Located in the heart of Cumming, this shop serves Forsyth County and surrounding communities with a straightforward, customer‑centric approach. The emphasis is on honest communication, fair pricing, and dependable scheduling—supporting long‑term partnerships with enthusiasts and professionals alike. The on‑site dyno capability enables fast validation of modifications and accelerates the path from concept to road or track readiness.

Operating hours are weekdays from 9:00 AM to 5:00 PM, with flexibility for urgent projects. Whether pursuing a rugged truck upgrade, a Camaro tune, or a high‑performance V8 build, the team combines expert technicians and precision tuning to deliver measurable, real‑world gains.