Unitronic Stage 1 and 1+ ECU Tune D5 S8 4.0

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UnitronicSKU: UNI-S1-D5S840 DIY Difficulty: EASY

Select Tune: Stage 1
Select Flashing Tool: -

$1,360 $1,600

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Performance Stage 1 ECU Software Precisely Engineered for your D5 S8 with the 4.0 EA825 engine.  This vehicle has added support through UniCONNECT+ which allows you to program your own vehicle right in your own garage.

Unitronic software is flashed directly through the (OBDII) diagnostic port of your vehicle (10-15 minutes).


  • Stage 1 gains over stock: +137HP / +104TQ (91 Octane Fuel)
  • Stage 1 gains over stock: +190HP / +119TQ (93 Octane Fuel)
  • Engineered with Strict Industry Standards
  • Extensively Tested Under Various Driving Conditions
  • Factory Safety Limiters Retained
  • Optimized Responsiveness and Drivability
  • Optimized Smoothness and Driving Comfort
  • Power Delivery Perfectly Optimized Throughout the Power Band
  • Improved Fuel Efficiency
  • Speed Governor Removed
  • Hardware Requirements: None
  • An upgraded intake is recommended to achieve the advertised power figures. 728HP/699LB-FT max w/ Stock Intake

What's Included:

  • Unitronic Stage 1 or 1+ ECU Tune
  • Unitronic UniCONNECT+ Cable (OPTIONAL)

Vehicle Fitment

Model   + Drivetrain  
D5 S8 4.0T V8
Sale Item +

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