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Unitronic Performance Software - With UniCONNECT+ Cable

Choose the stage that meets your power goals!
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms Buy Unitronic Software 6/22/26 - 7/10/26 for a chance to win your Software & UniCONNECT+ Cable for FREE!
This tune can be performed at home with the included UniCONNECT+ cable. Only available for purchase in th
Unitronic
Unitronic
ES#:
4387800
Mfg#:
14TSIGEN2UC
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Unitronic Performance Software - With UniCONNECT+ Cable

Starting at: $514.99
SALE: 514.99
Starting at: $514.99
WAS: $664.99 on 06-22-2026

This product was last offered at the strikethrough price on
06-22-2026


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This product is lifetime replacement eligible
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Unitronic Performance Software - Stage 1+ - With UniCONNECT+ Cable
Gain up to 38 horsepower and 54 lb-ft of torque on 93 Octane
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms Buy Unitronic Software 6/22/26 - 7/10/26 for a chance to win your Software & UniCONNECT+ Cable for FREE!
4387796 14TSIG2-1+-UC
Availability:
In Stock
Est. Ship Date:
in 1 Business Day
This product is lifetime replacement eligible Lifetime Replacement
This product is backed by our
Lifetime Replacement Program! Read more here
Sale
SAVE 21% $714.99

This product was last offered at the strikethrough price on
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564.99
Unitronic Performance Software - Stage 2 - With UniCONNECT+ Cable
Gain up to 40 horsepower and 90 lb-ft of torque on 93 Octane
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms Buy Unitronic Software 6/22/26 - 7/10/26 for a chance to win your Software & UniCONNECT+ Cable for FREE!
Requires an Upgraded Downpipe
4465422 14TSIG2-2-UC
Availability:
In Stock
Est. Ship Date:
in 1 Business Day
This product is lifetime replacement eligible Lifetime Replacement
This product is backed by our
Lifetime Replacement Program! Read more here
Sale
SAVE 20% $764.99

This product was last offered at the strikethrough price on
06-22-2026

614.99

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Product Details

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms Buy Unitronic Software 6/22/26 - 7/10/26 for a chance to win your Software & UniCONNECT+ Cable for FREE!
This tune can be performed at home with the included UniCONNECT+ cable. Only available for purchase in th

Performance Software Precisely Engineered for a completely stock car.
Subject to ECU box code availability.

UniCONNECT+

This vehicle has added support through UniCONNECT+ which allows you to program your own vehicle right in your own garage.

Features:

  • Optimized Responsiveness, Smoothness, Drivability, and Comfort:
    Unitronic’s ECU calibrations are engineered to improve engine response and reduce low-end lag. Unitronic’s Performance Software has gained worldwide recognition and is well known for its broad powerband, with smooth power delivery, maximizing responsiveness and “area under the curve”, under normal and hard acceleration.
  • Ignition Timing Precisely Calibrated for Higher Octane Fuel:
    Engine calibration optimized to take advantage of higher fuel quality to extract maximum energy from the combustion. Therefore, when using a higher octane fuel, more power and better fuel efficiency will be achieved.
  • Optimized Maximum Output:
    Unitronic’s ECU Calibrators deliver the maximum power output while staying within the operational limits of the factory engine and drivetrain components. Specifically, this results in the highest engine performance without sacrificing the reliability of the engine, turbocharger, or other engine and drivetrain components.
  • Factory Safety Limiters Retained:
    OEM “fail safes” are retained within the ECU calibration. Close monitoring of all operation parameters ensures that engine operation stays within factory components limits, resulting in reliability.
  • Power Delivery Perfectly Optimized Throughout the Power Band:
    Aligned with the OEM strategy, the calibration is designed to offer a large flat torque plateau to provide a smooth and linear power band. Maximum torque output is achieved sooner and maintained longer which creates a broader torque plateau and greater area under the curve. This results in an improved acceleration and optimal engine operation.
  • Speed Governor Removed:
    Vehicle speed limiter within ECU is removed. (Subject to transmission rotational speed limit.)
  • Improved Fuel Efficiency:
    Optimized timing and injection in cruising condition allows for an improved fuel efficiency, under normalized driving conditions.
  • Engineered with Strict Industry Standards:
    With over 10 years of experience with Bosch and Siemens engine management systems and calibrations, Unitronic is able to utilize its expertise, industry leading tools and equipment to ensure an optimal calibration; delivering maximum performance, while maintaining complete OEM-like reliability and drivability.
  • Extensively Tested Under Various Driving Conditions:
    Development begins using Unitronic’s in-house Maha Chassis dyno housed in an environmentally controlled cell; closely monitoring a plethora of operational data, utilizing industry leading calibration tools and resources. Beta calibrations are then tested in street and track scenarios, using multiple cars under various driving conditions. This engine calibration strategy ensures Unitronic Performance Software delivers maximum performance, OEM-like drivability and reliability anywhere in the world. Unitronic Performance Software is only released to its Clients once development is thoroughly completed in accordance to Unitronic’s strict standards.
  • Ignition Timing Precisely Calibrated for Higher Octane Fuel:
    Engine calibration optimized to take advantage of higher fuel quality to extract maximum energy from the combustion. Therefore, when using a higher octane fuel, more power and better fuel efficiency will be achieved.

Stage 2 Requires:

  • Upgraded Downpipe
  • Upgraded Intake Recommended

*This tune can be performed at home with the included UniCONNECT+ cable. Only available for purchase in the United States.

Not for sale or use in the state of California on any pollution-controlled vehicle as per the California Air Resources Board.

This Part Fits the Following Vehicles

Make Model Submodel Engine Special Fitment Notes
Volkswagen Golf VII Facelift FWD 1.4T Use vehicle selector to confirm fitment
Volkswagen Golf VII SportWagen Facelift FWD 1.4T Use vehicle selector to confirm fitment
Volkswagen Jetta VII Sedan 1.4T Use vehicle selector to confirm fitment
*The above product applications have been written by ECS Tuning. All warranties, product application, fitment, and performance are the responsibility of ECS Tuning. For additional information see the terms of use.
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