Stage 3
Stage 3 · Petrol · 1.8T 20v 210hp
Seat Leon 1.8 T Stage 3 file Bosch HW 0261208531 · 06A906032SJ · SW 369040
Seat Leon 1.8 T Turbo Petrol 154.5 kW (210 HP) Stage 32002, Turbo petrol, 154.5 kW (210 hp)
210 → 347 HP +137 HP +149 Nm 65% more power
Calibrated ECU file for 0261208531 (SW 369040). Checksum-corrected, ready to flash. Delivered instantly via secure download after payment.
Performance projection
Matched engine: 1.8T 20v 210hp, AMK, 1.8L, Petrol. Engine #6806 in our gains database.
- Power
- 347 HP+137 HP from 210
- Torque
- 419 Nm+149 Nm from 270
- Fuel economy
- −8 %−12% full load
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 0261208531 and software 369040.
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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: Stage 3, Petrol.
Hardware
- Hybrid or larger turbocharger
- Upgraded high-pressure fuel pump and / or injectors
- Front-mount intercooler upgrade
- Sport / decat downpipe + free-flow exhaust
- High-flow air intake
- Uprated clutch (manual gearbox)
Software / calibration
- Custom map dialled to the installed turbo, injector and intercooler spec
- Boost, fuelling, ignition / injection timing rebuilt around the new hardware
- All safety limits (knock, EGT, lambda, rail) re-tuned to match
- Drivability and torque-by-gear shaped to match the hardware
Stage 3 is hardware-matched. Send your turbo / injector / intercooler / clutch spec at checkout so the file is calibrated to YOUR build: typical projection above is a guide, final dyno depends on installed hardware.
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 |
| Model year | 2002 |
| Displacement | 1.8 L |
| Fuel / Induction | Petrol |
| Factory power | 154.5 kW (210 HP) |
| ECU manufacturer | Bosch |
| ECU hardware | 0261208531 |
| ECU software | 369040 |
| Calibration stage | Stage 3 |
| Cylinder capacity | 1781 CC |
| Compression ratio | 9,5 : 1 |
| Bore × Stroke | 81,0 X 86,4 mm |
| OEM engine code | AMK |
| 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 | 210 HP | 270 Nm | — | — |
| Stage 1 | 240 HP | 340 Nm | +30 (14.3%) | +70 |
| Stage 2 | 294 HP | 392 Nm | +84 (40%) | +122 |
| Stage 3 | 347 HP | 419 Nm | +137 (65.2%) | +149 |
| Stage 4 | 410 HP | 500 Nm | +200 (95.2%) | +230 |
About this calibration file
The Stage 3 calibration for the 2002 Seat Leon 1.8L Petrol targets a hardware-upgraded setup — hybrid or larger turbocharger, upgraded injectors, high-flow fuelling and in most cases a full exhaust. Maps are redrawn for the new airflow envelope with re-scaled MAF/MAP, torque limiters, smoke limiters and boost PID re-tuned.
This file matches a Bosch ECU with hardware number 0261208531 and software version 369040. 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.
Projected output on a healthy, stock-hardware example of this engine: 347 HP and 419 Nm at the crank — a gain of +137 HP (65%) and +149 Nm over the factory 210 HP / 270 Nm baseline. These numbers are sourced from our Vehicle Performance Database, which aggregates dyno results across this engine family. Real-world gains depend on fuel grade, ambient temperature, mechanical condition and intake/exhaust state.
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
0261208531 (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 calibrated Stage3 tuning file for Seat Leon 1.8 T 2002 Turbo-Benzin 154.5KW with Bosch 0261208531 and software ID 06A906032SJ (Bosch software number 369040 ( 1037369040 )). The base stock vehicle for this calibration has a factory output of around 154.5 kW (~210 HP). This high-stage file targets heavily modified setups (bigger turbo, injectors etc.) and should be used by experienced tuners only.
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 0261208531, 06A906032SJ, 369040 (1037 + SW code). Use this file for diagnostics, cloning, recovery or as a base for custom remapping.
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