Seat Leon 1.4 TSI (CAXC) Stage 1 (125PS / 6-Speed Manual) - Reviews | MED17

Seat Leon 1.4 TSI (CAXC) Stage 1 (125PS / 6-Speed Manual) - Reviews | MED17
Leon 1.4 TSI CAXC — MED17 513998 Bosch — Calibration File
This Stage 1 tuning file is engineered to awaken the sporty potential of the Seat Leon 1.4 TSI (CAXC engine), equipped with the Bosch MED17 ECU and software 513998. This calibration is designed to make the popular TSI engine more lively, responsive, and fun to drive.

Our remap focuses on sharpening throttle response for a more connected feel, optimizing boost pressure for a stronger mid-range pull, and adjusting ignition timing to extract more power. As an added feature, this tune also removes the factory top speed limiter (Vmax), allowing for unrestricted performance in a closed-course or track setting. It’s the perfect all-in-one upgrade for the enthusiast driver.

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New Tuning File Available: Leon 1.4 TSI CAXC — MED17 513998 Bosch — Calibration File 03C906016AP - Seat Stage 1 — ECU: 03C906016AP / SW: 513998 — A dynamic tune to enhance throttle response and unlock the top speed limiter for a much sportier drive.

💬 Discussion & Reviews: Seat 1.4 TSI (CAXC)​


Welcome to the official discussion thread for the Seat 1.4 TSI (CAXC) tuning package. This calibration is specifically developed for the MED17 ECU and optimized to work seamlessly with the 6-Speed Manual.

Target Performance: 125 PS / 91.9 kW.

👇 Share your experience!
Have you flashed this file? Drop your dyno graphs, 0-100 times, reviews, or ask any technical questions below!

All tuning files were acquired through official EVC.de resellers and verified on a professional dynamometer. Each calibration corresponds to the developer listed in the “Modified By” section — performance graphs may be available on their official website. These files are intended for motorsport or off-road use only. Ensure proper installation and do not operate the vehicle aggressively without first confirming mechanical condition. The seller accepts no responsibility for misuse or non-compliant road use.

Extended Product Information​

  • Driver-wish and torque maps revised for a sporty, responsive throttle feel
  • Ignition timing advanced for improved power and torque delivery
  • Boost pressure moderately increased within safe hardware limits
  • Vmax (top speed limiter) removed for unrestricted performance
  • Fuel maps optimized for performance on high-octane fuel
  • All engine safety protections (knock, temperature) are fully retained

➜ Download Tuning File / View Full Specs
 

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