DD84 Store/Diagnostic Service
Performance Wiring & EFI Power DiagnosticsDiagnostic Only
Diagnostic scopeThis purchase evaluates the issue; it does not silently become a tune.
Clear next stepIf calibration changes are needed, DD84 routes you to the correct tuning service.
Down Dirty 84

Performance Wiring & EFI Power Diagnostics

DIAGNOSTIC ONLYNo tune editing, flashing or calibration revision is included unless the product description explicitly says otherwise.
$75.00
Product details
Confirm your service.

Ask DD84 to confirm the application, selected package, timing and any additional costs before purchase. Ask DD84

Call or text 706-208-7465
PRODUCT DETAILS

REVIEW & NEXT STEPS

Find the electrical fault before replacing more parts.

Diagnostic labor for supported EFI, fuse, relay, power and ground concerns. Parts, repairs and travel are quoted separately.

Diagnostic service for performance wiring, EFI power loss, fan power supply, ECM power supply, interior power distribution, and related electrical issues.

  • EFI power loss diagnostics
  • Holley EFI and aftermarket ECU wiring review
  • Fan, relay, fuse, power, and ground testing
  • Harness repair estimate available after inspection

Important: This listing covers diagnostic labor only. Harness repair, parts, rewiring, relays, terminals, fuse panels, and travel are quoted separately.

Choose the right option

Confirm your vehicle, selected scope, required submissions and current timing with DD84 before purchase. For an appointment or equipment loan, availability must also be confirmed.

  • Basic Electrical Diagnostic: $75.00
  • Advanced Wiring Diagnostic: $125.00
  • Harness Build Estimate Deposit: $250.00

Ask DD84 about this service

Call or text 706-208-7465. Include the product name and your vehicle or build details.