GM Custom ECU Tuning Service
Down Dirty 84 LLC

GM Custom ECU Tuning Service

$350.00
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Custom GM ECU tuning service for street-driven performance builds. Built for safe power delivery, drivability, and reliability.

  • Supports common GM LS/LT platforms
  • NA, cammed, boosted, and bolt-on combinations
  • Customer intake required before calibration work
  • Final scope depends on vehicle condition, setup, and datalog review

Important: Vehicle must be mechanically sound before tuning. Misfires, fuel pressure issues, major wiring faults, and unresolved sensor issues must be corrected before calibration.