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ECU locked? You can still upgrade. The 2025 VW Passat Variant 430 TSI  can’t be flashed internally, but VAITRIX Plug-In PC  delivers safe, effective performance gains without touching the factory ECU. 📊 Dyno-proven results: Stock: 265 hp / 40.8 kg·m VAITRIX: 301 hp / 49.28 kg·m ➡️ +36 hp / +21% torque Real-world gains Earlier turbo response from low RPM Stronger mid-range torque for easier overtaking Smooth, factory-like drivability ✔ Plug & play✔ No ECU flashing or wirin