Tuning & calibration for the build you actually have
Down Dirty 84 LLC helps owners of modified vehicles in Jefferson, Georgia and, where supported, remotely. We review the vehicle, controller, hardware, fuel, modifications and symptoms before recommending a calibration path.
Start with a readiness reviewAsk about your build
Choose the right path
ECU and transmission calibration
Controller-matched base files and custom services for supported combinations. A base file is a starting point; data logging and refinement may be needed.
Browse calibration filesRemote and in-person support
Service depends on controller access, compatible tools, a mechanically sound vehicle, and usable data. We confirm scope before payment.
View tuning servicesHolley and standalone EFI
Startup, sensor setup and calibration support for eligible systems and combinations. Send the ECU model, sensor and injector information for review.
Check supportDiagnostics and programming
No-start, wiring, communication and drivability problems may need diagnosis before tuning. Tell us what the vehicle does and what has already been tested.
Describe the problemBefore you order
- Send year, make, model, engine, transmission, controller, modifications, fuel and goal.
- Tell us what tuning interface and stock read or logs you have. We confirm compatibility, access and any required credits or unlocks.
- Use the live Shopify product page for the current price, included work, delivery and revision terms. Do not buy a controller-specific file from a vehicle guess.
Unsure where to start? The store's compatibility and readiness path starts at $49. Final scope and price are confirmed on the current product page or after review. Emissions-system defeat services are not included.