Standalone EFI support for eligible builds
DD84 reviews Holley and other aftermarket ECU requests based on the exact controller, firmware, sensors, injectors, wiring, fuel system and vehicle condition. Send your setup before purchasing a service; availability varies by system and project.
Check my setupView current services
What to send
- Vehicle, engine, transmission, fuel and modification list
- ECU model, firmware, current map, injector data and sensor configuration
- Wideband, MAP, crank and cam sensor details, wiring information and recent data logs where available
- The specific startup, drivability or calibration problem and any fault codes
DD84 will confirm support, the scope, current price, file delivery and any revision terms for the actual combination. Use the current Shopify service listing for purchase details.
Do not flash an unverified file or run a vehicle with unknown fuel, sensor or safety configuration. Mechanical and wiring issues may need correction before tuning. Dyno validation is a future plan and is not included unless expressly stated in a current service listing.