Unitronic Stage 2 Performance ECU Software is now available for the MK8 GTI. Power outputs on the MK8 GTI are increased by up to +176HP / +153LB-FT with Unitronic Stage 2 E60-E85 Ethanol Performance Software.

These software upgrades are fully compatible with our UniCONNECT+ cable, empowering customers to tune their vehicles directly through the OBD-2 port within minutes from the comfort of their homes or garage. 

Gas type: 91 Octane / 93 Octane / E60-E86 Ethanol

Installation
Flashed directly through your vehicle's (OBDII) Diagnostic port (10-15 minutes). (In some rare cases it may require a little more time.)

Uniconnect+
This vehicle has added support through UniCONNECT+, which allows you to program your vehicle right in your garage. Learn More

Performance Gains

• 91 Octane / 95 Ron gas: +122HP / +107LB-FT
• 93 Octane / 98 Ron gas: +144HP / +126LB-FT
• E60-E85 Ethanol: +176HP / +153LB-FT

NOTE: E85 calibrations are not full flex fuel calibrations, therefore, when using an E85 ECU calibration, the engine is only designed to operate on E85 blends from E60-E85.

Using an E85 calibration with pump gasoline or race gas may result in engine damage.

Unitronic strongly recommends the use of an Ethanol Content Analyzer, to ensure Ethanol content levels are within the permissible range. When switching between gasoline to ethanol, please use Unitronic’s fuel conversion guide here.

Required hardware

• Aftermarket High Flow Downpipe 
• Unitronic Intercooler Upgrade (22+ GTI/Golf R)
• TCU Performance Software or Upgraded Clutch for Manual Vehicles

Expanding on its extensive experience with the SIMOS controllers found in modern VW and Audi vehicles and being the first major North American tuner with Performance Software offerings for the SIMOS 19.6 equipped MK8 GTI (including at-home tuning via UniCONNECT+), Unitronic Engineers wasted no time recalibrating the new SIMOS 19.6 ECU to achieve more power and torque with Stage 2 calibration optimizations including recalibrated boost regulation, optimized ignition timing, lambda, camshaft timing, and much more after upgrading to a performance downpipe. 

Dyno and road testing while closely monitoring running conditions through high-speed data logging tools and equipment to ensure maximum performance while maintaining complete OEM-like reliability and drivability. Extra attention was paid to turbocharger shaft speed, exhaust manifold absolute pressure, intake pressure, and much more to ensure this high level of reliability was achieved.

ECU SOFTWARE 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. It is well known for its broad powerband, with smooth power delivery, maximizing the responsiveness, and “area under the curve”, under normal and hard acceleration.

Ignition Timing Precisely Calibrated for Higher Octane Fuel

Engine calibration is optimized to take advantage of higher fuel quality to extract maximum energy from the combustion. Therefore, more power and better fuel efficiency will be achieved when using a higher-octane fuel.

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

The vehicle speed limiter within ECU is removed. (Subject to transmission rotational speed limit.)

Improved Fuel Efficiency

Optimized timing and injection in cruising conditions allow for 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 can utilize its expertise, industry-leading tools, and equipment to ensure 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 tested in the street and track scenarios using multiple cars under various driving conditions. This engine calibration strategy ensures Unitronic Performance Software delivers maximum performance, OEM-like reliability, and drivability anywhere in the world. Unitronic Performance Software is only released to its Clients once development is thoroughly completed according to Unitronic’s strict standards.