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EVOMS Stage 4 Upgrade Kit
EVOMS Stage 4 Upgrade Kit

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Our Price: $8,295.00

Product Code: TUN996TTK16L4

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The EVOMS Stage 4 Upgrade Kit of today is an evolution of the original kits we designed for this car when it was released in 2001, and an expansion of the Stage 3 kit. As these kits have evolved so has their power, reliability and overall performance. While increasing airflow with the use of our V-Flow Air Intake kit with the highly reliable and precise Hitachi Mass Airflow Sensor, replacing the factory diverter valves which are prone to failure with our Billet Diverter Valves, maintain the cool airflow with a set of the EVOMS Clubsport Intercoolers and Boost Hose Kit, allowing the car to exhale better with the Fabspeed performance exhaust and EVOMS Clubsport Exhaust Manifolds, and rounding out the package with our EVOMSit software calibration your 996TT will be transformed into a very reliable and more powerful version of itself. Not only will you experience the increased power, but a much more direct and intuitive throttle response, a longer and smoother powerband, and a bigger smile on your face.

These kits are designed, tested and produced with the driver in mind. Not only do we prove their power on the dyno, but they are real-world tested by EVOMS employees, professional race car drivers and our customers. Forever evolving and perfecting the driving experience is our goal so we can provide you, our enthusiast customer, with the highest level of satisfaction with your prized automobile.

All of the components in this kit are applicable through our GT775 Signature Turbo Package, so if you plan on starting here and upgrading through the kits down the road you will not lose anything along the way. All of our kit components were designed with this mentality in mind to deliver not only performance gains to your vehicle, but a logical and cost-effective upgrade path to your power goals. These kits are OBDII compliant and maintain all factory safety parameters within the ECU. This kit will not cause a Check Engine Light or any other drivability issues.

Please note an ECU is not included with this kit, but the software upgrade for your ECU is. Please contact one of our sales representatives to plan the logistics of getting your ECU upgraded by us or one of our EVOMSit Software Partners around the globe. The kit does include all hardware and gaskets required for installation.

When ordering, please specify your preferred octane of fuel in the notes section so we can calibrate the software specifically to your needs. If you already have EVOMS components within this kit and are looking to upgrade to the next step, please contact one of our sales representatives at +1 (480) 317-9911 or at

Kit Features Over Stock:

  • +130 Horsepower
  • +130 Torque
  • Improved Drivability
  • Improved Reliability
  • Significantly Improved Driving Experience

EVOMS Stage 4 Performance Package Includes:

  • Pricing subject to change without notice.
  • This product may not comply with your local emissions standards. EVOMS is not responsible for emissions compliance, please purchase with care.

    Power is measured at the wheels on our Mustang 500 SE AWD dyno in a controlled environment for accuracy. Dyno runs shown are the average runs of a 10 run sample group for both the Baseline and EVOMSit modified runs. Dyno runs are accurately run with the same RPM start point, same transmission gear, same octane fuel and same cool down time in-between runs. Measurement was made with 1 x 65,000 CFM main cooling fan in the front of the vehicle with 2 x 5000 CFM "spot" cooling fans directed at the intercoolers with reverse flow. Dyno room temperature was 78.7 degrees Fahrenheit for both sets of run groups and fuel grade was 100% pump 91 octane AZ grade oxygenated fuel.

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