June 28 to July 2 we will be closed


At Stevenson Tuning, we offer industry leading ECU remapping, performance exhaust systems, delete kits and custom tuning solutions. Our team of experts specializes in optimizing the performance of your Volkswagen, AUDI, BMW, PORSCHE DIESEL, ensuring you get the most out of your vehicle. Whether you're looking for increased power, improved fuel efficiency, or a customized driving experience, we've got you covered.


Milwaukee • Madison • Green Bay • Kenosha • Racine • Appleton • Waukesha • Eau Claire • Oshkosh • Janesville • Dane • Waukesha • Brown • Outagamie • Winnebago • Kenosha • Rock County • Marathon






Powergate Performance

Transform Vehicle Performance or Reduce Fuel Consumption Directly From Your Smartphone

With Powergate, you can interact with your car’s onboard diagnostics (OBD) on any supported model, leveraging the same advanced protocols used by KESS3. This app connects to your vehicle via Bluetooth for seamless, real-time adjustments and utilizes a cloud-based service for updates and data storage. Whether you're looking to boost horsepower, enhance fuel efficiency, fine-tune engine parameters, or ensure your vehicle is ready for inspection, Powergate provides a secure, user-friendly platform to ensure top performance from your vehicle at all times.

  • Performance Enhancement: Increase horsepower and torque for a more dynamic driving experience.
  • Fuel Efficiency: Optimize fuel usage to save on costs and reduce environmental impact.
  • Readiness Monitors: Set all monitors to pass/ready even with a delete, ensuring your vehicle shows ready for off-road use and inspection purposes.
  • Real-Time Adjustments: Make instant changes to your vehicle's performance settings via Bluetooth.
  • Cloud-Based Updates: Access the latest tuning updates and data storage through our secure cloud service.

More Horsepower

INCREASED Efficiency

High-Performance Exhaust and Delete Kits

Enhance your vehicle's performance and sound with our top-quality exhaust and delete kits from Stevenson Tuning. Designed for car enthusiasts and serious tuners, our products offer the ultimate solution for maximizing airflow and reducing back pressure, which translates into noticeable gains in horsepower and torque.


Amazing customer support, fast shipped and fantastic quality products. Highly recommended.

Jonny T.

My go to guys for all things performance. I trust Stevenson Tuning with my car.

Tony L.

The power increases are unbelievable! Really impressed with my new Powergate 4

Lisa M.
Steven Tunning

Stevenson Tuning Dealer Portal

Access exclusive tools, resources, and the latest tuning technologies designed specifically for our dealers. Expand your operations, enhance your service offerings, and drive your business success with Stevenson Tuning — your partner in automotive performance excellence.

Our Blogs

Remapping Your Car: Unlocking Its Full Potential

Remapping your car's engine control unit (ECU) is an advanced tuning solution that can significantly improve your car's performance. By tweaking t...
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Bolt-On Upgrades: The Easy Way to Enhance Your Car's Performance

f you're looking for an easy and hassle-free way to upgrade your car's performance, bolt-on upgrades are the way to go. Bolt-on upgrades are after...
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Why Custom Tuning is Essential for Your Car's Performance

As a car enthusiast, you want your vehicle to perform at its best. Whether you're looking to improve acceleration, increase horsepower, or enhance...
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Steven Tunning

Got a Question? We're Here to Help!

Whether you're curious about our tuning services, need more information on performance exhausts, or have questions about delete kits, you've come to the right place. Can't find what you're looking for? Our expert team is just a click away!

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