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Stage 1

Stage 1 · Petrol · 2.7T 230hp

Audi A6 2.7TL Stage 1 file Bosch HW 0261206380 · 4B0907551G · SW 350241

Audi A6 2.7TL Turbo Petrol 169.2 kW (230 HP) Stage 1

2004, Turbo petrol, 169.2 kW (230 hp)

230 → 315 HP +85 HP +170 Nm 37% more power

Calibrated ECU file for 0261206380 (SW 350241). Checksum-corrected, ready to flash. Delivered instantly via secure download after payment.

Performance projection

Matched engine: 2.7T 230hp, AJK, 2.7L, Petrol. Engine #426 in our gains database.

080160240320 1000200030004000500060007000 315 HP +85 480 Nm +170 HP Nm RPM 0120240360480
Stock · Stage 1 · HP (left) · Nm (right) · Curve shape typical for this ECU family
Power
315 HP+85 HP from 230
Torque
480 Nm+170 Nm from 310
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

  1. Read your ECU

    With KESS, KTAG, AutoTuner or Flex. Keep the read: it is your way back.

  2. Match the numbers

    Your read must show hardware 0261206380 and software 350241.

  3. Pay and download

    Card, Apple Pay or Google Pay. The file is in your account straight away.

  4. 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 1, Petrol.

Hardware

  • No hardware changes required: runs on completely stock hardware

Software / calibration

  • Boost / load targets optimised within factory hardware limits
  • Ignition advance refined for the running fuel grade
  • Throttle response and torque request remapped
  • Factory safeties (knock, lambda, EGT) preserved

Stage 1 is a software-only calibration. Compatible with stock turbo, injectors, intercooler, exhaust and clutch.

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 A6 2 7tl
Model year 2004
Fuel / Induction Petrol
Factory power 169.2 kW (230 HP)
ECU manufacturer Bosch
ECU ID 4B0907551G
ECU hardware 0261206380
ECU software 350241
Calibration stage Stage 1
OEM engine code AJK
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.

Engine2.7T 230hp CodeAJK Displacement2.7L FuelPetrol Engine ID#426
Stage Power Torque Δ HP Δ Nm
Original / Factory 230 HP 310 Nm — —
Stage 1 315 HP 480 Nm +85 (37%) +170
Stage 2 334 HP 504 Nm +104 (45.2%) +194
Stage 3 380 HP 529 Nm +150 (65.2%) +219
Stage 4 449 HP 574 Nm +219 (95.2%) +264
Fuel economy gain (vs. factory map, same driving profile): combined cycle −8% , full-load cruise −12%. Diesel calibrations typically net bigger combined-cycle savings thanks to shorter duty-cycle on low-load driving.

About this calibration file

The Stage 1 calibration for the 2004 Audi A6 2 7tl Petrol is a drop-in remap that works on completely stock hardware — no turbo, injector, intercooler or fuel-system upgrades required. Injection timing, boost targets, rail-pressure limits and torque maps are rebalanced to extract the safe headroom the OEM leaves untouched for fleet-fuel tolerance, altitude margin and warranty buffer.

This file matches a Bosch ECU with hardware number 0261206380 and software version 350241. 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: 315 HP and 480 Nm at the crank — a gain of +85 HP (37%) and +170 Nm over the factory 230 HP / 310 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

The file is written for the exact ECU hardware 0261206380 (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.

No. Stage 1 is explicitly a stock-hardware tune — no turbo, injector, fuel-pump, intercooler or exhaust changes are required. The only prerequisite is a mechanically healthy engine with good compression, clean EGR/DPF state, and fresh service fluids.

Re-flashing the ECU leaves a flag that a franchised Audi dealer can detect with their diagnostic tool. Most markets treat this as a basis to deny powertrain warranty claims that the modification could have caused. Emissions-sensitive components (DPF, EGR, SCR) remain fully functional with this calibration — we do not remove, disable or alter any emissions hardware.

The power and torque numbers on this page are healthy-engine crank figures. On a well-maintained 2004 Audi A6 2 7tl running a known-good fuel brand, you should see a clearly perceptible increase in mid-range pull — typically from 1,800 to 4,000 rpm on diesel, 2,500 to 6,000 rpm on petrol — along with a shorter 80-to-120 km/h in-gear time. Thermal performance and fuel consumption depend on how you drive post-tune.

Instant. As soon as the payment clears, the file appears under Downloads in your account and the link is emailed to you. It does not expire: sign in and download it again whenever you need it.

Pre-corrected. Every tuning file we sell is processed through CHKSuite (our in-house checksum engine) before it reaches your download link. You can flash it directly with KESS, KTAG, AutoTuner, CMD, Dimsport or any other supported tool — no extra checksum step required. A zero-CRC write to a modern Bosch/Siemens/Delphi ECU bricks the unit, so this is non-negotiable.

Contact us on WhatsApp or through the dashboard support thread. Free revisions are included for the same stage on the same ECU — send us a live log (via VCDS, INPA, EcuConnect, OBDeleven or similar) and we'll adjust timing, boost, rail pressure or smoke limits and re-issue the file. A failed flash itself (write aborted, bricked ECU) is recoverable with our Original file and a bench tool.

Product details

This product contains a calibrated Stage1 tuning file for Audi A6 2.7TL 2004 Turbo-Benzin 169.2KW with Bosch 0261206380 and software ID 4B0907551G (Bosch software number 350241 ( 1037350241 )). The base stock vehicle for this calibration has a factory output of around 169.2 kW (~230 HP). This Stage 1 calibration is designed for stock hardware, offering a safe and reliable increase in power and torque for daily use.

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 0261206380, 4B0907551G, 350241 (1037 + SW code). Use this file for diagnostics, cloning, recovery or as a base for custom remapping.

SHA-256 fingerprint391BA397 EB6E80C1 A605D339 6AD13D9B 9EF16A44 33F6222B BCA25679 0301CCD8