Original file
Original / Factory · Petrol · 1.5 e-TSI 150hp
Seat Leon original file Bosch HW 0281010403 · 038906019CL · SW 354301
Seat Leon 110.3 kW (150 HP) Original110.3 kW (150 hp)
150 HP Factory calibration Stock backup file, 225 Nm, Petrol
Calibrated ECU file for 0281010403 (SW 354301). Checksum-corrected, ready to flash. Delivered instantly via secure download after payment.
Performance projection
Matched engine: 1.5 e-TSI 150hp, 1.5L, Petrol. Engine #6861 in our gains database.
- Power
- 150 HPfactory calibration
- Torque
- 225 Nmfactory calibration
Real data from Gains API. Dyno curve = typical ECU-family projection. Final gains depend on fuel, altitude, wear.
How it works
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Read your ECU
With KESS, KTAG, AutoTuner or Flex. Keep the read: it is your way back.
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Match the numbers
Your read must show hardware 0281010403 and software 354301.
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Pay and download
Card, Apple Pay or Google Pay. The file is in your account straight away.
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Write it and drive
Write it back the way you read it. Not right for your car? We correct it free.
What the car needs
Required modifications: Factory, Petrol.
Hardware
- Factory hardware: no modifications required
Software / calibration
- OEM calibration restored (recovery / immobiliser / coding work)
Original files are used to revert to factory state, repair after a faulty tune, or recover an ECU before service work.
Vehicle & ECU specifications
Exact vehicle, engine and ECU identifiers this calibration file is written for. Cross-check against your ECU before flashing.
| Vehicle make | Seat |
|---|---|
| Vehicle model | Leon 110 |
| Factory power | 110.3 kW (150 HP) |
| ECU manufacturer | Bosch |
| ECU hardware | 0281010403 |
| ECU software | 354301 |
| Calibration stage | Original (Factory) |
| OEM engine code | 1.5 e-TSI 150hp |
| File format | BIN / ORI |
| Checksum | Pre-corrected (ready to flash) |
| Delivery | Instant download after payment |
Engine performance matrix
Power, torque and fuel-economy figures for every tuning stage on this engine, sourced from the tuning-database Gains API. Values are healthy-engine crank numbers; real on-road gains vary with fuel, altitude and mechanical condition.
| Stage | Power | Torque | Δ HP | Δ Nm |
|---|---|---|---|---|
| Original / Factory | 150 HP | 225 Nm | — | — |
| Stage 1 | 181 HP | 284 Nm | +31 (20.7%) | +59 |
| Stage 2 | 210 HP | 326 Nm | +60 (40%) | +101 |
| Stage 3 | 248 HP | 349 Nm | +98 (65.3%) | +124 |
| Stage 4 | 293 HP | 416 Nm | +143 (95.3%) | +191 |
About this calibration file
This is the factory (original) ECU calibration for the Seat Leon 110, extracted from a genuine stock control unit. Use it as a verified backup before flashing any performance tune, or as a reference when recovering an ECU from a failed write.
This file matches a Bosch ECU with hardware number 0281010403 and software version 354301. Verify both identifiers in your flashing tool before writing — an ID mismatch is the most common cause of a bricked ECU. If you are unsure, upload a read of your original file via the file-request wizard and our engineers will confirm compatibility before you flash.
The file is delivered as a ready-to-flash BIN (and ORI backup where applicable) compatible with all major tools — KESS V2/V3, KTAG, AutoTuner, CMDFlash, Dimsport New Genius, MPPS, Flex, BFlash, PCMFlash, MMFlash — via OBD, bench or boot-mode as supported by your ECU family. Checksums are pre-computed and verified; no additional checksum tool is required. All files include a free revision if post-flash logs reveal a fuelling, boost or EGT issue.
Frequently asked questions
0281010403 (Bosch) listed in the specifications. Read your ECU with any supported tool (KESS, KTAG, AutoTuner, CMD, etc.) and compare the hardware + software numbers against the ones on this page. If they match exactly, the file is a direct fit. If you're not 100% sure, upload your original read via the file-request wizard and our engineers will confirm within minutes — no cost, no obligation.Product details
This product contains a complete original ECU backup (stock file) for Seat Leon 110.3KW with Bosch 0281010403 and software ID 038906019CL (Bosch software number 354301 ( 1037354301 )). This original file corresponds to a factory engine output of approximately 110.3 kW (~150 HP). This file is ideal for ECU cloning, restoring the car back to stock and using it as a safe base for future remaps.
All ECU tuning files from TUNING-DATABASE are prepared for professional use. They are useful whenever you search by ECU ID, hardware or software number such as 0281010403, 038906019CL, 354301 (1037 + SW code). Use this file for diagnostics, cloning, recovery or as a base for custom remapping.
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