Stage 3
Stage 3 · Petrol · 2.7T 265hp
Audi S4 2.7 V6 BiTurbo Stage 3 file Bosch HW 0261206776 · 8D0907551G · SW 360855
Audi S4 2.7 V6 BiTurbo Turbo Petrol 194.9 kW (265 HP) Stage 32002, Turbo petrol, 194.9 kW (265 hp)
265 → 437 HP +172 HP +220 Nm 65% more power
Calibrated ECU file for 0261206776 (SW 360855). Checksum-corrected, ready to flash. Delivered instantly via secure download after payment.
Performance projection
Matched engine: 2.7T 265hp, AGB, 2.7L, Petrol. Engine #679 in our gains database.
- Power
- 437 HP+172 HP from 265
- Torque
- 620 Nm+220 Nm from 400
- 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 0261206776 and software 360855.
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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 | Audi |
|---|---|
| Vehicle model | S4 |
| Model year | 2002 |
| Displacement | 2.7 L |
| Fuel / Induction | Petrol |
| Factory power | 194.9 kW (265 HP) |
| ECU manufacturer | Bosch |
| ECU ID | 8D0907551G |
| ECU hardware | 0261206776 |
| ECU software | 360855 |
| Calibration stage | Stage 3 |
| OEM engine code | AGB |
| 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 | 265 HP | 400 Nm | — | — |
| Stage 1 | 315 HP | 480 Nm | +50 (18.9%) | +80 |
| Stage 2 | 334 HP | 504 Nm | +69 (26%) | +104 |
| Stage 3 | 437 HP | 620 Nm | +172 (64.9%) | +220 |
| Stage 4 | 517 HP | 740 Nm | +252 (95.1%) | +340 |
About this calibration file
The Stage 3 calibration for the 2002 Audi S4 2.7L 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 0261206776 and software version 360855. 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: 437 HP and 620 Nm at the crank — a gain of +172 HP (65%) and +220 Nm over the factory 265 HP / 400 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
0261206776 (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 Audi S4 2.7 V6 BiTurbo 2002 Turbo-Benzin 194.9KW with Bosch 0261206776 and software ID 8D0907551G (Bosch software number 360855 ( 1037360855 )). The base stock vehicle for this calibration has a factory output of around 194.9 kW (~265 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 0261206776, 8D0907551G, 360855 (1037 + SW code). Use this file for diagnostics, cloning, recovery or as a base for custom remapping.
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