DE Register for free

Seat Leon
2.0 TSI Cupra 300hp ( 300 PS / 221 kW ) — Tuning File

300 PS stock power · 5F MK2 - 2017 - 2019 (2017-2019) · Gasoline
Vehicle Data
BrandSeat
ModelLeon
Generation5F MK2 - 2017 - 2019
Year2017-2019
FuelGasoline
Displacement1,984.0 L
Engine CodeCJXC
ECUContinental SIMOS18.1/6
Stock Power300 PS
Stock Torque380 Nm
Tuning Potential
STAGE1
350 PS +50
Power
460 Nm +80
Torque
+50 PS
Gain
STAGE2
365 PS +65
Power
484 Nm +104
Torque
+65 PS
Gain
Available Options
Exhaust flaps open Lambda OFF Pop & Bang Start Stop OFF Vmax OFF
ECU Remap — Seat Leon 2.0 TSI Cupra 300hp ( 300 PS / 221 kW )

The Seat Leon 2.0 TSI Cupra 300hp ( 300 PS / 221 kW ) (Gasoline, 300 PS) can be tuned with a Stage 1 ECU remap to 350 PS — a gain of +50 PS without any hardware modifications. Our tuning files target the original ECU software and optimise parameters such as injection timing, boost pressure and fuel maps to unlock the full performance potential.

All tuning files at ecufiles.io are developed and tested by experienced engineers. The original ECU file is always preserved — the remap is 100% reversible at any time.

Frequently Asked Questions
What does an ECU remap do on the Seat Leon 2.0 TSI Cupra 300hp ( 300 PS / 221 kW )?
An ECU remap (chiptuning) modifies the engine control unit software to optimise parameters like injection timing, turbo boost pressure and fuel delivery. On the 2.0 TSI Cupra 300hp ( 300 PS / 221 kW ), this typically results in more power, better throttle response and improved fuel efficiency at part load.
How much power gain is possible with Stage 1 on the 2.0 TSI Cupra 300hp ( 300 PS / 221 kW )?
Stage 1 brings the 2.0 TSI Cupra 300hp ( 300 PS / 221 kW ) from 300 PS to 350 PS — a gain of +50 PS. No hardware modifications are required, making it the most popular and cost-effective tuning option.
Is chiptuning reversible on the Seat Leon?
Yes. We always save the original ECU file before applying any remap. The tuning can be fully reversed to factory settings at any time.
How fast do I receive the tuning file?
We process orders Monday to Friday from 08:00–20:00 and Saturday from 10:00–16:00. Most tuning files for the Seat Leon are delivered within 1–3 hours after uploading your original file.

Order Tuning File for Seat Leon

Upload your original file — we deliver the right tuning file for your 2.0 TSI Cupra 300hp ( 300 PS / 221 kW ). Fast, secure, credit-based. B2B access for chiptuning professionals.

Register for free Log in