The CarBahn Difference

Engineered for Excellence. Tuned for Precision.

At Built by Felix, we proudly incorporate the CarBahn philosophy of high-performance engineering — delivering refined power, enhanced drivability, and unmatched reliability. Inspired by the legacy of Steve Dinan and the CarBahn commitment to quality, we offer tuning and upgrade solutions that elevate your vehicle without sacrificing comfort or control.

What Makes the CarBahn Difference?

• OEM+ Tuning Philosophy
  CarBahn’s approach ensures upgrades are built with OEM-level safety margins and durability. You get noticeable gains — without compromising longevity.
• Performance with Refinement
  Every tune and modification is designed to improve throttle response, horsepower, and torque while keeping drivability smooth and reliable.
• Tested. Proven. Trusted.
  CarBahn components and calibrations are developed with rigorous engineering standards and tested in real-world and track conditions.

What We Offer at Built by Felix

• CarBahn-approved performance upgrades
• ECU and transmission tuning
• Suspension packages engineered for balance and grip
• High-performance engine components
• Expert installation backed by precision diagnostics

Drive with Confidence

With The CarBahn Difference, you don’t have to choose between performance and reliability — you get both. Whether you’re pushing limits on the track or enjoying spirited street drives, we ensure your vehicle delivers at every level.

Frequently Asked Questions

Is CarBahn tuning safe for daily driving?
Yes — CarBahn tunes are developed with a strong focus on reliability and drivability, making them ideal for both street and track use.

What vehicles are eligible for CarBahn upgrades?
Most late-model BMW and select Audi vehicles are supported. Reach out to confirm compatibility with your vehicle.

Do you install official CarBahn products?
Yes. We offer installation of CarBahn-authorized parts and software, ensuring everything is done to spec.

How does CarBahn differ from other tuning brands?
CarBahn prioritizes engineering integrity. Their upgrades deliver real gains while maintaining manufacturer-level safety margins and balance.